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( music ) the eight traits successful people have in common . number one : passion . successful people love what they do . when i asked russell crowe what led to his academy award for best actor , he said , `` the bottom line is i love the actual job of acting . i have a great passion for it . '' successful people in a... | he said , `` no , i do n't like this job . i love this job . '' we can have passion for a profession .
| the video shows there are many possible career passions . you can have passion for an industry , a profession , a product , working with people , etc . 1 ) what is your passion ? describe what you love to do . 2 ) now use those words to help you write your own perfect job description . if you saw an ad for the job you ... |
will winning the lottery make you happier ? imagine winning a multi-million dollar lottery tomorrow . if you 're like many of us , you 'd be ecstatic , unable to believe your good luck . but would that joy still be there a few years later ? maybe not . a famous study of 22 lottery winners showed that months after winni... | and later studies have confirmed that our emotional well-being , how often and how intensely we feel things like joy , sorrow , anxiety , or anger , do n't seem to improve with wealth or status beyond a certain point . this has to do with a phenomenon known as hedonic adaptation , or the hedonic treadmill . it describe... | the hedonic treadmill :
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many of the inanimate objects around you probably seem perfectly still . but look deep into the atomic structure of any of them , and you 'll see a world in constant flux . stretching , contracting , springing , jittering , drifting atoms everywhere . and though that movement may seem chaotic , it 's not random . atoms... | translation allows the molecule to move in the direction of any of them . that 's three degrees of freedom . it can also rotate around any of these three axes .
| how many rotational ‘ degrees of freedom ’ does a non-linear molecule have ?
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( piano playing ) steven : we 're looking at one of the single canvases from a series of canvases of the campbell soup cans by andy warhol from 1962 at the museum of modern art . and one of the really important questions that comes up about , especially modern art , is well , why is this art ? sal : when you ask me tha... | ( piano playing ) steven : we 're looking at one of the single canvases from a series of canvases of the campbell soup cans by andy warhol from 1962 at the museum of modern art . and one of the really important questions that comes up about , especially modern art , is well , why is this art ? sal : when you ask me tha... | what do you think art is ? are there limitations - can anything be art ?
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there 's a man by the name of captain william swenson who recently was awarded the congressional medal of honor for his actions on september 8 , 2009 . on that day , a column of american and afghan troops were making their way through a part of afghanistan to help protect a group of government officials , a group of af... | we would never do it . then why do we consider laying off people inside our organization ? charlie implemented a policy of lifetime employment .
| what does sinek say matters most inside an organization ?
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translator : andrea mcdonough reviewer : bedirhan cinar what do harry potter , katniss everdeen , and frodo all have in common with the heroes of ancient myths ? ( roar ) what if i told you they are all variants of the same hero ? do you believe that ? joseph campbell did . he studied myths from all over the world and ... | 9:00 : return after all that adventure , the hero returns to his ordinary world . 10:00 : new life this quest has changed the hero ; he has outgrown his old life . 11:00 : resolution all the tangled plot lines get straightened out .
| when does the hero realize that he/she is changed ( or has outgrown his/her old life ) ?
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each year in the united states , players of sports and recreational activities receive between 2.5 and 4 million concussions . how dangerous are all those concussions ? the answer is complicated , and lies in how the brain responds when something strikes it . the brain is made of soft fatty tissue , with a consistency ... | so long as doctors are n't concerned there may also be a more severe brain injury , like a brain bleed , there 's no documented problem with going to sleep after a concussion . sometimes , victims of concussion can experience something called post-concussion syndrome , or pcs . people with pcs may experience constant h... | which of the following could be a concussion symptom ?
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translator : andrea mcdonough reviewer : bedirhan cinar you 've probably heard of pavlov 's dogs , the phrase that often summarizes dr. ivan pavlov 's early 20th century research , in which he demonstrated that we can alter what stimuli elicit a reflective response in canines . he showed this by sounding a bell just be... | what changes here is our reaction to our ailment , such as perceiving less pain and not the ailment itself . or , consider the love humans have for a parent . some would argue that this love is instinctual , and they may be partially right .
| to build rapport with a young child , one might consider pairing oneself with :
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if you live on the east coast of the united states , you 've spent the last 17 years of your life walking , eating and sleeping above a dormant army of insects . these are the cicadas . every 17 years , billions of them emerge from the ground to do three things : molt , mate and die . there are 15 different broods of c... | if you live on the east coast of the united states , you 've spent the last 17 years of your life walking , eating and sleeping above a dormant army of insects . these are the cicadas . every 17 years , billions of them emerge from the ground to do three things : molt , mate and die .
| are cicadas still part of the food chain ? if so , how ?
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translator : andrea mcdonough reviewer : jessica ruby enough mutations can bypass these fail-safes , driving these cells to divide recklessly . that one rogue cell becomes two , then four , then eight . `` how do you animate real materials , like brains and nerves and stuff like that ? how do you take something that do... | `` so , there 's this technique that you guys use to make the cells look like they 're alive so they 're not just sitting there . that 's called shimmering . how does that work exactly ? ''
| lisa describes the animation effect known as shimmering . in your own words , how does it work ?
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so here we have a sample of cobalt . now i have got lots and lots of different samples of cobalt in my drawer , so this is cobalt sponge . cobalt is , in many ways , similar to iron . it can form magnets . so this cobalt has been generated from a solution and it ’ s been made in very , very finely dispersed so it has a... | so here we have a sample of cobalt . now i have got lots and lots of different samples of cobalt in my drawer , so this is cobalt sponge . cobalt is , in many ways , similar to iron . it can form magnets .
| cobalt compounds have been used for millennia as a pigment for glass and ceramics . what is the color of these pigments ?
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think about all the things that need to happen for a human settlement to thrive : obtaining food , building shelter , raising children and more . there needs to be a way to divide resources , organize major efforts and distribute labor efficiently . now imagine having to do this without any sort of planning or higher l... | these seemingly crude methods of search and retrieval are , in fact , so useful that they are applied in computer models to obtain optimal solutions from decentralized elements , working randomly and exchanging simple information . this has many theoretical and practical applications , from solving the famous traveling... | for what kinds of tasks is it necessary to have a plan , or central control , and for what kinds of tasks is it better to work collectively , with each individual using only what it can detect nearby ?
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you know , back in the '40s and '50s , the original standard television had a 4 to 3 width to height ratio . that shape was chosen to be a slight rectangle , but still mostly square , thus having the maximal screen area for the given dimensions . and that 's still the ratio on many tvs and computer monitors in today 's... | of course , now you can argue that we 're only using 75 % of that screen . and that is where the real question is : do you want your full screen , or do you want to see the entire movie ? most likely , you just need a bigger tv .
| do you want your full screen , or do you want to see the entire movie ? do you consider yourself an avid tv watcher or a movie buff ? do the notorious black bars necessary on typical televisions bother you , or is it a welcome compromise ? explain how you would ideally watch a movie on your television .
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so you 're going to the museum and it 's great . the guards check your bag so you , i do n't know , shoot a painting ; you go up some fancy escalators , you see naked statues . and then it happens . you see a super ugly medieval baby . why do medieval babies look like ugly middle aged men ? this baby looks like he want... | it 's because most of these babies were depictions of jesus and mary . they were influenced by the idea of the homunculus , which is latin for little man . these babies looked like benjamin button because philosophers believed jesus was born perfectly formed and unchanged .
| what does ‘ homunculus ’ mean ?
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homer 's `` odyssey '' , one of the oldest works of western literature , recounts the adventures of the greek hero odysseus during his ten-year journey home from the trojan war . though some parts may be based on real events , the encounters with strange monsters , terrifying giants and powerful magicians are considere... | the plant is also loaded with compounds that disrupt the vital neurotransmitter called acetylcholine . such disruption can cause vivid hallucinations , bizarre behaviors , and general difficulty distinguishing fantasy from reality , just the sorts of things which might make people believe they 've been turned into anim... | if you wanted to make circe into a kind-hearted sorceress , what sorts of effects on the body would you expect the drugs in her food to have ?
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[ go project films ] i think that facing death changes people ... which is what happened with me . before this experience , i was a completely different person with a completely different dream . my last dream which was to treat cancer and right now my dream of changing the world in another way . [ welcome to canada ] ... | [ 6.5 million more are displaced within syria . ] [ in november 2015 , the government of canada promised ] [ to resettle 25,000 syrian refugees within 6 months . ] [ the 2400 court motel in vancouver is one of 9 temporary housing sites ] [ for the newly arrived refugees . ]
| the prime minister of canada , justin trudeau , when asked about welcoming syrian refugees to canada said in a 2015 interview , `` this is something that we are able to do in this country because we define a canadian not by a skin color or a language or a religion or a background , but by a shared set of values , aspir... |
we already know that the world is made of things , things like cats and macaroni salad , and macaroni salad is made of things like mayo and mustard and celery , which are all made of molecules . as we 'll see , these molecules are made of the same stuff , just mixed together in different ways . let 's go back to our ma... | the complex proteins found in the foods we eat , like carrots and eggs , ca n't be used by our bodies because we are not carrots or chickens . what we can use are the smaller molecules that make up these proteins , the amino acids . during digestion , our bodies break these proteins up into their amino acids so they ca... | humans ca n't use the large molecules in proteins but can use _________ .
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translator : marcia de brito reviewer : ariana bleau lugo ( guitar music throughout ) music is a language . both music and verbal languages serve the same purpose . they are both forms of expression . they can be used as a way to communicate with others . they can be read and written . they can make you laugh or cry , ... | and both can definitely make you move . in some instances , music works better than the spoken word , because it does n't have to be understood to be effective . although many musicians agree that music is a language , it is rarely treated as such .
| in some instances , music works better than the spoken word . why ?
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since the dawn of humanity , an estimated 100.8 billion people have lived and died , a number that increases by about .8 % of the world 's population each year . what happens to all of those people 's bodies after they die and will the planet eventually run out of burial space ? when a person 's heart stops beating , t... | high-acidity soils with a ph of less than 5.3 will rapidly decompose bone , whereas in a neutral or basic soil with a ph of 7 or more , a skeleton can remain in relatively good condition for centuries . different cultures throughout history have developed unique approaches to burials . as far back as the first neandert... | when was the first burial observed in the human history timeline ?
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translator : andrea mcdonough reviewer : jessica ruby worst case scenario : zombie apocalypse . how will you survive ? you might be surprised to find out how much geography skills can help you fend off doom . by geography , i mean analyzing the world around you . one geographic concept that could really help you out in... | when people , animals , or zombies move , it 's called migration . two concepts that affect migration are push and pull factors . push factors will make you want to leave somewhere .
| what are examples of pull factors ?
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have you ever been floating in a swimming pool , all comfy and warm , thinking , `` man , it 'd be cool to be an astronaut ! you could float out in outer space , look down at the earth and everything . it 'd be so neat ! '' only that 's not how it is at all . if you are in outer space , you are orbiting the earth : it ... | that 's 18,000 miles an hour , just over mach 23 ! the second problem : if you 're going that fast , yes , you would orbit the earth and come back where you came from , but there 's a lot of air in the way , much less people and things . so you would burn up due to atmospheric friction .
| if a ball is tossed up in the air , when does it not experience the force of gravity ?
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maybe you 've recently seen the phrase `` gluten-free '' on food packaging , or take-out menus , shampoo bottles , apartment listings , the tag of your shirt , on a hammer , as a lower back tattoo , or in your friend 's resume . next time someone starts telling you about their newfound freedom from gluten , here are so... | some people do n't have celiac disease or a wheat allergy , but still experience symptoms when they eat foods with gluten . these people have non-celiac gluten sensitivity . they experience painful gut symptoms and suffer from fatigue , brain fog , joint pain or skin rash .
| explain why gluten sensitivity is difficult to diagnose .
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language is an essential part of our lives that we often take for granted . with it , we can communicate our thoughts and feelings , lose ourselves in novels , send text messages , and greet friends . it 's hard to imagine being unable to turn thoughts into words . but if the delicate web of language networks in your b... | there is one rare form of aphasia called primary progressive aphasia , or ppa , which is not caused by stroke or brain injury , but is actually a form of dementia in which language loss is the first symptom . the goal in treating ppa is to maintain language function for as long as possible before other symptoms of deme... | ppa is a type of :
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what causes , say , heroin addiction ? this is a really stupid question , right ? it ’ s obvious ; we all know it ; heroin causes heroin addiction . here ’ s how it works : if you use heroin for 20 days , by day 21 , your body would physically crave the drug ferociously because there are chemical hooks in the drug . th... | the experiment is simple : you take a rat and put it in a cage with two water bottles . one is just water , the other is water laced with heroin or cocaine . almost every time you run this experiment , the rat will become obsessed with the drugged water and keep coming back for more and more , until it kills itself .
| what were the results of putting the drug-laced water bottle in `` rat park '' ?
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in the winter of 1995 , scientists pointed the hubble telescope at an area of the sky near the big dipper , a spot that was dark and out of the way of light pollution from surrounding stars . the location was apparently empty , and the whole endeavor was risky . what , if anything , was going to show up ? over ten cons... | this means we 're looking at the universe as it was less than a billion years after the big bang , and it allows scientists to research galaxies in their infancy . the deep field images have also shown that the universe is homogeneous . that is , images taken at different spots in the sky look similar .
| what does the hubble deep field image teach us about the big bang and the universe as a whole ?
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one of the most amazing facts in physics is this : everything in the universe , from light to electrons to atoms , behaves like both a particle and a wave at the same time . all of the other weird stuff you might have heard about quantum physics , schrodinger 's cat , god playing dice , spooky action at a distance , al... | rather , they were led to the dual nature of the universe through a process of small steps , fitting together lots of bits of evidence , like pieces in a puzzle . the first person to seriously suggest the dual nature of light was albert einstein in 1905 , but he was picking up an earlier idea from max planck . planck e... | what did max planck use to explain the spectrum of light emitted by a hot object ?
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between 2008 and 2012 , archeologists excavated the rubble of an ancient hospital in england . in the process , they uncovered a number of skeletons . one in particular belonged to a wealthy male who lived in the 11th or 12th century and died of leprosy between the ages of 18 and 25 . how do we know all this ? simply b... | biologically , female pelvises are wider , allowing women to give birth , where as males are narrower . bones also betray the signs of ancient disease . disorders like anemia leave their traces on the bones .
| cribra crani , which affects the cranial vault and causes the outer surface of spongy bone to become thinner and more porous , is a result of which disease ?
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earthquakes have always been a terrifying phenomenon , and they 've become more deadly as our cities have grown , with collapsing buildings posing one of the largest risks . why do buildings collapse in an earthquake , and how can it be prevented ? if you 've watched a lot of disaster films , you might have the idea th... | you might think that the solution is to build shorter buildlings so that they shift as little as possible . but the 1985 mexico city earthquake is a good example of why that 's not the case . durng the quake , many buildings between six and fifteen stories tall collapsed . what 's strange is that while shorter building... | during the mexico city earthquake of 1985 certain buildings collapsed , while others remained standing . what was the issue with the buildings that collapsed ? how could these collapses have been avoided ?
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you and nine other individuals have been captured by super intelligent alien overlords . the aliens think humans look quite tasty , but their civilization forbids eating highly logical and cooperative beings . unfortunately , they 're not sure whether you qualify , so they decide to give you all a test . through its un... | you 'll find that this strategy works for any possible arrangement of the hats . the first prisoner has a 50 % chance of giving a wrong answer about his own hat , but the parity information he conveys allows everyone else to guess theirs with absolute certainty . each begins by expecting to see an odd or even number of... | why do you decide on ‘ odd or even ’ for the ‘ secret meaning ’ of the first person ’ s guess ?
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we already know that the world is made of things , things like cats and macaroni salad , and macaroni salad is made of things like mayo and mustard and celery , which are all made of molecules . as we 'll see , these molecules are made of the same stuff , just mixed together in different ways . let 's go back to our ma... | it 's all made from the same elements that make up macaroni salad . so , to recap , everything is made of atoms . they are the stuff that things are made of . atoms are grouped together in different ways to form molecules .
| explain , in a nutshell , how everything is made out of the same stuff .
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( music ) eight to be great : the eight traits successful people have in common . number two : work . when i was interviewing all these successful people , they kept telling me how hard they worked . and i remember standing there thinking , `` ah , jeez , another comment about work ? why do n't they tell me the real se... | yes . successful people have fun working . that 's why i say they 're not really workaholics .
| people who have fun working are ?
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when ultraviolet sunlight hits our skin , it affects each of us a little differently . depending on skin color , it will take only minutes of exposure to turn one person beetroot-pink , while another requires hours to experience the slightest change . so what 's to account for that difference and how did our skin come ... | this built-in sun shield helped protect them from melanoma , likely making them evolutionarily fitter and capable of passing this useful trait on to new generations . but soon , some of our sun-adapted ancestors migrated northward out of the tropical zone , spreading far and wide across the earth . the further north th... | what disadvantage did our sun-adapted ancestors have when they moved to northern latitudes ?
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translator : andrea mcdonough reviewer : jessica ruby there are still lots of things about space that we may never be able to answer , like is time travel possible ? or are aliens living somewhere else in the milky way ? but there is one thing i believe about space : space is trying to kill me . space is n't out to get... | okay , what about the sun ? hollywood movies like to pick on our sun by showing earth destroyed by solar flares or the sun dying out , which would cause earth to freeze . astronomers predict our sun contains enough gas to make energy for another 3 to 5 billion years .
| what helps protect earth from radiation caused by solar flares ?
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approximately 7 million people around the world die from heart attacks every year , and cardiovascular disease , which causes heart attacks and other problems like strokes , is the world 's leading killer . so what causes a heart attack ? like all muscles , the heart needs oxygen , and during a heart attack , it ca n't... | fatty deposits , or plaques , develop on the walls of our coronary arteries . those are the vessels that supply oxygenated blood to the heart . these plaques grow as we age , sometimes getting chunky , hardened , or enflamed .
| what are the blood vessels that supply oxygenated blood to the heart called ?
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translator : andrea mcdonough reviewer : bedirhan cinar at birth , our bodies are roughly 75 % water . we remain mostly water for the rest of our lives . we can not survive even a week without fresh water . there 's no life without it for ecosystems , societies , and individuals . so , how much usable water is there on... | still , some general information can help us get a handle on major trends . who consumes the most fresh water ? and , what sectors consume the most fresh water ? first , who .
| what are the main ways you consume fresh water ? where can you cut back usage to help conserve ?
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so our reaction ’ s ready . now all we need again is a little bit of water just to start it off . so we ’ re here today and we ’ ve come back after hours because we need to use this room for a long period of time because we ’ re going to do something quite exciting . because brady ’ s bought another camera which you ca... | there ’ s been big changes in our flask ! so if you look carefully you can see now that the copper wire itself is covered in very , very sharp crystals of silver which have basically become deposited on the surface . copper has now won this chemical reaction .
| in the beautiful experiment pete performed , which was then converted into an amazing time-lapse by brady , we saw silver crystals precipitated on the surface of copper wire . but why does the solution turn blue ?
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energy is all around us , a physical quantity that follows precise natural laws . our universe has a finite amount of it ; it 's neither created nor destroyed but can take different forms , such as kinetic or potential energy , with different properties and formulas to remember . for instance , an led desk lamp 's 6 wa... | electrons can also be induced to flow by direct interaction with light particles , which is how a solar cell operates . other renewable energy sources , such as wind , water , geothermal , and biofuels can also be used to generate electricity . global demand for energy is increasing , but the planet has limited energy ... | think about your school and its use of energy . what are your school ’ s primary and secondary sources of energy ?
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( music ) on a typical day at school , endless hours are spent learning the answers to questions . but right now , we 'll do the opposite . we 're going to focus on questions where you ca n't learn the answers , because they 're unknown . i used to puzzle about a lot of things as a boy . for example , what would it fee... | but diving into them is exciting because it takes you to the edge of knowledge , and you never know what you 'll find there . so , two questions to kick off this series , questions that no one on earth knows the answer to ... text : how many universes are there ?
| how does anderson feel about the idea that there are questions we can ’ t answer ?
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one day the universe will die . but why ? and how ? and will the universe be dead forever ? and how do we know that ? first of all , the universe is expanding . and not only that , the rate of its expansion is accelerating . the reason : dark energy . dark energy is a strange phenomenon that scientists believe permeate... | and how do we know that ? first of all , the universe is expanding . and not only that , the rate of its expansion is accelerating .
| this video claims that the universe is expanding . what is the cause of its expansion ?
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there are a lot of ways this marvelous language of ours , english , does n't make sense . for example , most of the time when we talk about more than one of something , we put an s on the end . one cat , two cats . but then , there 's that handful of words where things work differently . alone you have a man ; if he ha... | the fact is that if you were speaking english before about a thousand years ago , beek is exactly what you would have said for more than one book . if modern english is strange , old english needed therapy . believe it or not , english used to be an even harder language to learn than it is today .
| have you noticed evolution in the english language ? explain your observations ( including reasons you think they happened ) .
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translator : andrea mcdonough reviewer : jessica ruby what 's an algorithm ? in computer science , an algorithm is a set of instructions for solving some problem , step-by-step . typically , algorithms are executed by computers , but we humans have algorithms as well . for instance , how would you go about counting the... | surely , we can do better ! why not count two people at a time ? instead of counting 1 , 2 , 3 , 4 , 5 , 6 , 7 , 8 , and so forth , why not count 2 , 4 , 6 , 8 , and so on ?
| in real life , why do you think people tend to count by 1s and 2s but not by 3s ?
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they say that if walls could talk , each building would have a story to tell , but few would tell so many fascinating stories in so many different voices as the hagia sophia , or holy wisdom . perched at the crossroads of continents and cultures , it has seen massive changes from the name of the city where it stands , ... | it was this secularization that allowed for removal of the carpets hiding the marble floor decorations and the plaster covering the christian mosaics . ongoing restoration work has allowed the multiplicity of voices in hagia sophia 's long history to be heard again after centuries of silence . but conflict remains .
| restoration is a costly and difficult process of evaluating the character of the past and how it will relate to the future . imagine that you had to undergo the task of restoring the hagia sophia . research the process , develop a plan to “ restore ” the building and be prepared to defend your changes .
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so element 96 was curium which named after marie curie and pierre curie who were the discoverers of radium . because of its high levels of radioactivity curium can be used in thermoelectric generators to produce electricity and you ’ ll get about 120 watts per hour out of one of these . however , because it is so radio... | so element 96 was curium which named after marie curie and pierre curie who were the discoverers of radium . because of its high levels of radioactivity curium can be used in thermoelectric generators to produce electricity and you ’ ll get about 120 watts per hour out of one of these . however , because it is so radio... | what is the application of curium steve mentioned in the video ?
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translator : andrea mcdonough reviewer : bedirhan cinar about 100 days ago , we landed a two-ton suv on the surface of another planet , on the surface of mars . this is one of the first pictures we took there with our rover , looking out at mount sharp . i kind of cry a little bit , choke up , when i see this picture .... | it 's a rocket-powered jet pack ; we call it the sky crane . basically , this big rocket sits on top of our rover and when we 're ready to land , the rocket hovers in place and we slowly lower the rover to the ground . and then we touch down , we 're actually on the wheels , we 're ready to drive , day one .
| though the actual curiosity rover weighed much less , how much did the entire rocket ( which included the rover ) weigh at the time of take off ?
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it was a night like any other night , except here i was climbing the platonic peaks like romeo on a second date . ( ugh ) i was there for the dame . she had eyes like imaginary numbers and curves that went on forever . said she wanted to go home . said i could help . said the pay was good . did n't say anything about c... | and then it hit me . `` she 's a heart breaker , my fractal femme fatale . will she do ? ''
| try inventing your own fractal .
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ok , today we 're going to talk about the mole . now , i know what you 're thinking : `` i know what a mole is , it 's a small furry creature that digs holes in the ground and destroys gardens . '' and some of you might be thinking that it 's a growth on your aunt 's face with hairs sticking out of it . well , in this ... | well , in 1811 , someone had an idea that if you had equal volumes of gases , at the same temperature and pressure , they would contain an equal number of particles . his name was lorenzo romano amedeo carlo avogadro . i wonder how long it took him to sign autographs .
| what did lorenzo romano amedeo carlo avogadro theorize in 1811 ?
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translator : andrea mcdonough reviewer : jessica ruby imagine a world in which you see numbers and letters as colored even though they 're printed in black , in which music or voices trigger a swirl of moving , colored shapes , in which words and names fill your mouth with unusual flavors . jail tastes like cold , hard... | welcome to synesthesia , the neurological phenomenon that couples two or more senses in 4 % of the population . a synesthete might not only hear my voice , but also see it , taste it , or feel it as a physical touch . sharing the same root with anesthesia , meaning no sensation , synesthesia means joined sensation .
| why might a synesthete be advantaged ?
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cerium is one of only two elements which , if you strike it , will make sparks . one of them is iron and the other one is cerium . and so i bought this when i was on holiday a year ago . i haven ’ t had the chance to use it . it contains , it consists of a rod here which claims to have several metals including cerium .... | there ’ s a company , or several companies , that are using nano particles of cerium oxide as an additive for fuels to make a particular diesel fuel to try and make it burn better and give more power when you are driving diesel cars . and here in nottingham we are trying to develop new ways of making these nano particl... | as the professor explained , his research has involved making nanoparticles by reacting cerium with ...
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have you ever heard the sound of frogs calling at night ? for hundreds of millions of years , this croaking lullaby has filled the nighttime air . but recent studies suggest that these frogs are in danger of playing their final note . over the past few decades , amphibian populations have been rapidly disappearing worl... | before we get into how to save the frogs , let 's start by taking a look at why they 're disappearing and why it 's important to keep them around . habitat destruction is the number one problem for frog populations around the world . there are seven billion humans on the planet , and we compete with frogs for habitat .... | what are some of the primary environmental problems in your part of the world . are there any that are likely to affect frogs ? can you think of ways to educate your fellow citizens about the problem and possibly even come up with solutions ?
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for most of history , humans had no idea what purpose the heart served . in fact , the organ so confused leonardo da vinci , that he gave up studying it . although everyone could feel their own heart beating , it was n't always clear what each thump was achieving . now we know that the heart pumps blood . but that fact... | simply identify the two atria and cut them off , trimming them down to the tops of the ventricles . this makes the heart look less complicated because the atria have several incoming veins attached . so without them there , the only vessels remaining are the two major heart arteries : the aorta and pulmonary artery , w... | when the heart is working inside the body , the job of the atria is to ________ .
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you can think of your cells as the kitchen in a busy restaurant . sometimes your body orders chicken . other times , it orders steak . your cells have to be able to crank out whatever the body needs and quickly . when an order comes in , the chef looks to the cookbook , your dna , for the recipe . she then transcribes ... | but wait ! why would rna want to interfere with itself ? well , sometimes a cell does n't want to turn all of the messenger rna it creates into protein , or it may need to destroy rna injected into the cell by an attacking virus .
| scientists hope to use rnai to help treat conditions caused by single gene mutations . these mutations would create incorrect rna , which would in turn create malformed proteins . explain how introducing long , double-stranded rna that matches the gene into a cell could help knock down the effects of these malformed pr... |
one of the great things about science is that when scientists make a discovery , it 's not always in a prescribed manner , as in , only in a laboratory under strict settings , with white lab coats and all sorts of neat science gizmos that go , `` beep ! '' in reality , the events and people involved in some of the majo... | and it was a strange little contraption indeed , as it looked more like a tiny paddle the size of a sunglass lens . if he had stuck two together , it probably would have made a wicked set of sunglasses that you could n't see much out of . anyhoo , once leeuwenhoek had his microscope ready , he went to town , looking at... | if you could invent one `` science gizmo , '' what would it be ? do you think your invention would lead to any discoveries that would change our understanding of science ?
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taking that internship in a remote mountain lab might not have been the best idea . pulling that lever with the skull symbol just to see what it did probably was n't so smart , either , but now is not the time for regrets because you need to get away from these mutant zombies fast . with you are the janitor , the lab a... | by the professor 's calculations , the zombies will catch up to you in just over 17 minutes , so you only have that much time to get everyone across and cut the ropes . unfortunately , the bridge can only hold two people at a time . to make matters worse , it 's so dark out that you can barely see , and the old lantern... | how many people can the bridge hold at a time ?
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ok , today we 're going to talk about the mole . now , i know what you 're thinking : `` i know what a mole is , it 's a small furry creature that digs holes in the ground and destroys gardens . '' and some of you might be thinking that it 's a growth on your aunt 's face with hairs sticking out of it . well , in this ... | now , back to the mole . not that mole . this mole . yep , this number has a second name . the mole . chemists use the term mole to refer to the quantities that are at the magnitude of 602 sextillion .
| what 's another name for the mole ?
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for the microscopic lab worm , c. elegans life equates to just a few short weeks on earth . compare that with the tortoise , which can age to more than 100 years . mice and rats reach the end of their lives after just four years , while for the bowhead whale , earth 's longest-lived mammal , death can come after 200 . ... | that makes our bodies go into a decline , which eventually results in disease and death . but if that 's consistently true , why the huge variance in aging patterns and lifespan within the animal kingdom ? the answer lies in several factors , including environment and body size . these can place powerful evolutionary p... | which of the following factors is thought to contribute to the short lifespan of roundworms ?
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in the mid-1970 ’ s , erno rubik invented the rubik ’ s cube . but that doesn ’ t mean knew how to solve it . it took him a few moths to figure it out . by the time the first world rubik ’ s cube championships were held in 1982 , the winner -- he could solve the cube in a little less than 23 seconds . and these days ? ... | it took him a few moths to figure it out . by the time the first world rubik ’ s cube championships were held in 1982 , the winner -- he could solve the cube in a little less than 23 seconds . and these days ?
| at the first rubik 's cube championship in 1982 , how fast did the winner solve the cube ?
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here at scishow hq we have a little food area for the employees - sometimes there are donuts . sometimes there are nuts . sometimes dried mango . but the one thing that never sticks around and is gone as soon as we can buy it is the wonderful , beautiful , noble banana . unfortunately for us , they may not be around fo... | bananas , at least the ones that you see at the store , were created by people . do n't get me wrong , there are wild banana plants - lots of them - they 're native to south and southeast asia , and there are dozens of species and thousands of varieties . they 're just not the ones we eat .
| 1. wild banana plants are native to_____ ?
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one of the most remarkable aspects of the human brain is its ability to recognize patterns and describe them . among the hardest patterns we 've tried to understand is the concept of turbulent flow in fluid dynamics . the german physicist werner heisenberg said , `` when i meet god , i 'm going to ask him two questions... | that 's how this and other impressionist works use quickly executed prominent brushstrokes to capture something strikingly real about how light moves . 60 years later , russian mathematician andrey kolmogorov furthered our mathematical understanding of turbulence when he proposed that energy in a turbulent fluid at len... | true or false : a complete description of turbulence is to this day an unsolved problem in physics .
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probability is an area of mathematics that is everywhere . we hear about it in weather forecasts , like there 's an 80 % chance of snow tomorrow . it 's used in making predictions in sports , such as determining the odds for who will win the super bowl . probability is also used in helping to set auto insurance rates a... | in order to answer this question , we need to know the fundamental counting principle . the fundamental counting principle states that if there are a possible outcomes for one event , and b possible outcomes for another event , then there are a times b ways to pair the outcomes . clearly this works for a two-question t... | if there are a possible outcomes for one event and b possible outcomes for another event , then there are a times b ways to pair the outcomes . what is this known as ?
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translator : andrea mcdonough reviewer : jessica ruby is it possible to create something out of nothing ? or , more precisely , can energy be made into matter ? yes , but only when it comes together with its twin , antimatter . and there 's something pretty mysterious about antimatter : there 's way less of it out ther... | consider , for example , the electron . it has a very small mass and negative electric charge . it 's antiparticle , the positron , has exactly the same mass , but a positive electric charge .
| the main difference between particles and antiparticles is their opposite electric charge . discuss the effect on the spectrum of anti-atoms , and hence the optical appearance of an anti-star .
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translator : andrea mcdonough reviewer : bedirhan cinar people often think the word `` doubt '' spelling is a little crazy because of the letter `` b '' . since it does n't spell a sound , most folks ca n't figure out what it 's doing there . but in spite of what most of us learn in school , sound is < i > never < /i >... | over time , even as fewer literate people knew latin , the `` b '' was kept because it marked important , meaningful connections to other related words , like `` dubious '' and `` indubitalbly , '' which were subsequently borrowed into english from the same latin root , `` dubitare '' . understanding these historical c... | explain the method you used to learn to spell words . would you consider yourself a good speller ? do you think the way you learned to spell had something to do with your ability to spell words ?
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every chicken was once an egg , every oak tree an acorn , every frog a tadpole . the patch of mold on that old piece of bread in the back of your fridge , not so long ago that was one , solitary cell . even you were once but a gleam in your parents ' eyes . all these organisms share the same basic goal : to perpetuate ... | every chicken was once an egg , every oak tree an acorn , every frog a tadpole . the patch of mold on that old piece of bread in the back of your fridge , not so long ago that was one , solitary cell .
| which of the following statements is true :
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a handful of species on earth share a seemingly mysterious trait : a menstrual cycle . we 're one of the select few . monkeys , apes , bats , humans , and possibly elephant shrews are the only mammals on earth that menstruate . we also do it more than any other animal , even though its a waste of nutrients and can be a... | but in humans and a few other species , the placenta actually penetrates right into the mother 's circulatory system to directly access her blood stream . through its placenta , the fetus pumps the mother 's arteries with hormones that keep them open to provide a permanent flow of nutrient-rich blood . a fetus with suc... | the hormones the fetus pumps into the mother 's blood can :
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[ go project films ] i think that facing death changes people ... which is what happened with me . before this experience , i was a completely different person with a completely different dream . my last dream which was to treat cancer and right now my dream of changing the world in another way . [ welcome to canada ] ... | [ 6.5 million more are displaced within syria . ] [ in november 2015 , the government of canada promised ] [ to resettle 25,000 syrian refugees within 6 months . ] [ the 2400 court motel in vancouver is one of 9 temporary housing sites ] [ for the newly arrived refugees . ]
| in november 2015 , the government of canada promised to resettle 25,000 syrian refugees within how many months ?
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language is an essential part of our lives that we often take for granted . with it , we can communicate our thoughts and feelings , lose ourselves in novels , send text messages , and greet friends . it 's hard to imagine being unable to turn thoughts into words . but if the delicate web of language networks in your b... | language is an essential part of our lives that we often take for granted . with it , we can communicate our thoughts and feelings , lose ourselves in novels , send text messages , and greet friends .
| a paraphasia is :
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most people recognize his name and know that he is famous for having said something , but considering the long-lasting impact his teachings have had on the world , very few people know who confucius really was , what he really said , and why . amid the chaos of 6th century bce china , where warring states fought endles... | a person cultivated in this way works to help others , guiding them by moral inspiration rather than brute force . to put his philosophy into practice , confucius became an advisor to the ruler of his home state of lu . but after another state sent lu 's ruler a troop of dancing girls as a present and the ruler ignored... | what did confucius think was the most important role of the ruler ?
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translator : andrea mcdonough reviewer : bedirhan cinar mysteries of vernacular miniature , something distinctively smaller than other members of its type or class . miniature traces its roots to the latin , < i > minium < /i > , which meant , `` red lead '' . minium referred , in particular , to a compound of lead use... | another important visual device used to increase the prominence of certain portions of text was to set them off with large , ornate , and colorful capital letters , often surrounded by tiny , detailed paintings . the italians began to refer to these elaborate and diminutive paintings as < i > miniatura < /i > , illumin... | what are some of the modern english words that came from miniatura ?
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so in the bottom we see neon and this is a small glass discharge tube which has got a very low pressure of neon inside it . it ’ s generally used for lots of signs and things like that . you might see ‘ fish and chips ’ or perhaps a ‘ disco ’ or something like that . so neon is an inert gas like helium and it doesn ’ t... | so in the bottom we see neon and this is a small glass discharge tube which has got a very low pressure of neon inside it . it ’ s generally used for lots of signs and things like that .
| neon was discovered in 1898 by sir william ramsay and morris w. travers in london . from where did they isolate it ?
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how did adolf hitler , a tyrant who orchestrated one of the largest genocides in human history , rise to power in a democratic country ? the story begins at the end of world war i . with the successful allied advance in 1918 , germany realized the war was unwinnable and signed an armistice ending the fighting . as its ... | but upon his release about a year later , he immediately began to rebuild the movement . and then , in 1929 , the great depression happened . it led to american banks withdrawing their loans from germany , and the already struggling german economy collapsed overnight .
| what role did the great depression of 1929 play in making the nazi party a force in german politics ?
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gravity . it controls the universe . everything attracts everything else . ouch ! including you . ow ! in this final lesson , we 'll explore what gravity means for space-time , or rather what space-time means for gravity . until now , we 've been dealing with things moving at constant speeds , with straight world lines... | gravity . it controls the universe .
| quantum gravity – the union of quantum mechanics and einstein ’ s theory of gravity – has so far proved impossibly hard to construct . if we could work it out , it would be significant because :
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in 1898 , marie and pierre curie discovered radium . claimed to have restorative properties , radium was added to toothpaste , medicine , water , and food . a glowing , luminous green , it was also used in beauty products and jewelry . it was n't until the mid-20th century we realized that radium 's harmful effects as ... | as bad as all that sounds , white 's dangerous effects pale in comparison to another , more wide-spread pigment , green . two synthetic greens called scheele 's green and paris green were first introduced in the 18th century . they were far more vibrant and flashy than the relatively dull greens made from natural pigme... | the bright green pigments found in scheele ’ s and paris green were later found to contain :
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why is it so difficult to cure cancer ? we 've harnessed electricity , sequenced the human genome , and eradicated small pox . but after billions of dollars in research , we have n't found a solution for a disease that affects more than 14 million people and their families at any given time . cancer arises as normal ce... | but after billions of dollars in research , we have n't found a solution for a disease that affects more than 14 million people and their families at any given time . cancer arises as normal cells accumulate mutations . most of the time , cells can detect mutations or dna damage and either fix them or self destruct .
| how can we detect heterogeneity of cancer cells ?
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flatulence , or passing gas , is a normal daily phenomenon . most individuals , yes , that includes you , will make anywhere from 500-1500 milliliters of gas and can pass gas ten to twenty times a day . but where does this bodily gas come from ? a small proportion may come from ingesting air during sleep , or at other ... | a small proportion may come from ingesting air during sleep , or at other times , but the majority of gas is produced by bacteria in our intestines as they digest parts of food which we can not . our intestine is home to trillions of bacteria living in a symbiotic relationship with us . we provide them with a safe plac... | a symbiotic relationship such as the one between the billions of bacteria in a human ’ s intestines and a human is considered to be mutualism . list several ways both species benefit from one another by maintaining this relationship .
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oh , excuse me ! have you ever yawned because somebody else yawned ? you are n't especially tired , yet suddenly your mouth opens wide and a big yawn comes out . this phenomenon is known as contagious yawning . and while scientists still do n't fully understand why it happens , there are many hypotheses currently being... | we will call it the empathy yawn . empathy is the ability to understand what someone else is feeling and partake in their emotion , a crucial ability for social animals like us . recently , neuroscientists have found that a subset of mirror neurons allows us to empathize with others ' feelings at a deeper level .
| _______ is the ability to understand what someone else is feeling and partake in their emotion .
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imagine if half the people in your neighborhood , your city , or even your whole country were wiped out . it might sound like something out of an apocalyptic horror film , but it actually happened in the 14th century during a disease outbreak known as the black death . spreading from china through asia , the middle eas... | and indeed , the skeletal remains of black death victims found in london show telltale signs of malnutrition and prior illness . the destruction caused by the black death changed humanity in two important ways . on a societal level , the rapid loss of population led to important changes in europe 's economic conditions... | what caused the black death ?
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♪ a treasure trove of planets found astronomers are celebrating a new discovery . sean carey , manager , spitzer science center , caltech ipac the big news is that around a very nearby cold , small star we found seven rocky , earth-sized planets , all of which could potentially have liquid water . three of them orbit i... | ♪ a treasure trove of planets found astronomers are celebrating a new discovery . sean carey , manager , spitzer science center , caltech ipac the big news is that around a very nearby cold , small star we found seven rocky , earth-sized planets , all of which could potentially have liquid water . three of them orbit i... | how many rocky , earth-sized planets did the spitzer space telescope find around a nearby star ?
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so , the apocalypse has happened . the zombies have come and gone , and all plant life on earth has died somehow . all you have are some basic supplies and some seeds of a few types of essential plants . so , what should you do to make absolutely sure they grow , seeing how rebuilding human civilization absolutely depe... | but , in fact , all of these are methods that are commonly used to help seeds start growing . a typical seed consists of a plant embryo encased in a hard seed coat . to start growing , it needs to emerge or sprout from inside this shell .
| what do we call any method that breaks down the hard seed coat ?
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i ’ ve invited you all here today because i wanted to talk to you about some ugly stereotypes that are going around . i ’ ve been hearing a lot of unfair , unseemly , and unscientific generalizations being made lately . and they mostly have to do with sex . and your hormones . people have a nasty habit of equating “ ho... | but there are lots of more common -- and less obvious -- ways your hormones can get out of balance , not because of some disorder , but because these signaling chemicals are just caught up in a chain reaction , which can take a while to subside . some hormones just exist to control other hormones , which in turn contro... | which hormones does the pituitary produce and what function do those hormones serve ?
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translator : andrea mcdonough reviewer : jessica ruby today , we 're going to look at the world of rome through the eyes of a young girl . here she is , drawing a picture of herself in the atrium of her father 's enormous house . her name is domitia , and she is just 5 years old . she has an older brother who is fourte... | what is worse is that dad insists on calling all his daughters domitia . `` domitia ! '' his call to domitia drawing on the column , domitia iii .
| what peculiar thing did domitia 's father do ?
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light is the fastest thing we know . it 's so fast that we measure enormous distances by how long it takes for light to travel them . in one year , light travels about 6,000,000,000,000 miles , a distance we call one light year . to give you an idea of just how far this is , the moon , which took the apollo astronauts ... | our milky way is on the order of 100,000 light years across . the nearest galaxy to our own , andromeda , is about 2.5 million light years away space is mind-blowingly vast . but wait , how do we know how far away stars and galaxies are ?
| if a galaxy is 1 million light years away , the image that we take today is a picture of the galaxy when it was _______ younger .
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you 're telling a friend an amazing story , and you just get to the best part when suddenly he interrupts , `` the alien and i , '' not `` me and the alien . '' most of us would probably be annoyed , but aside from the rude interruption , does your friend have a point ? was your sentence actually grammatically incorrec... | and while any language needs consistent patterns to function , the study of these patterns opens up an ongoing debate between two positions known as prescriptivism and descriptivism . grossly simplified , prescriptivists think a given language should follow consistent rules , while descriptivists see variation and adap... | a dialect of a given language may become the standard variety of that language…
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in the summer of 1976 , a mysterious epidemic suddenly struck two central african towns , killing the majority of its victims . medical researchers suspected the deadly marburg virus to be the culprit . but what they saw in microscope images was an entirely new pathogen , which would be named after the nearby ebola riv... | and as the virus spreads , it invades the lymph nodes and vital organs , such as kidneys and liver , causing them to lose function . but the virus itself is not what kills ebola victims . instead , the mounting cell deaths trigger an immune system overload , known as a cytokine storm , an explosion of immune responses ... | which diseases kill more people than ebola ?
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you probably know that all stuff is made up of atoms and that an atom is a really , really , really , really tiny particle . every atom has a core , which is made up of at least one positively charged particle called a proton , and in most cases , some number of neutral particles called neutrons . that core is surround... | the identity of an atom is determined only by the number of protons in its nucleus . hydrogen is hydrogen because it has just one proton , carbon is carbon because it has six , gold is gold because it has 79 , and so on . indulge me in a momentary tangent .
| why did we choose gold for the last element in the video ?
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translator : andrea mcdonough reviewer : bedirhan cinar every cell in your body is separated from those around it by its outermost layer , its membrane . a cell membrane must be both sturdy and flexible . imagine a membrane made of metal - great at keeping the cell 's guts inside , but horrible at letting materials flo... | from each of these samples , they extracted all the lipids from all the red blood cells and placed a few drops of this extract on a tray of water . true to form , the lipids , like oil , spread out into a monolayer , whose size gorter and grendel could measure . if they compared the surface area of that monolayer to th... | if you could be known for any discovery , what would it be and why ?
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here 's what has to happen for pregnancy to occur after sexual intercourse . sperm must swim up the vagina , through the cervical opening , upwards through the uterus , and into one of the two fallopian tubes . if an egg , released during that month 's ovulation , is in the tube , one sperm has a chance to fertilize it... | that 's why these methods require a prescription from a doctor . the choice of contraceptive method is a personal one , and what works best for you now may change later . scientists also continue to research new methods , such as a male pill that would prevent sperm production .
| once a person chooses a type of contraceptive :
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few individuals have influenced the world and many of today 's thinkers like plato . one 20th century philosopher even went so far as to describe all of western philosophy as a series of footnotes to plato . he created the first western university and was teacher to ancient greece 's greatest minds , including aristotl... | diogenes the cynic , annoyed by this definition , stormed into plato 's class with a plucked chicken , announcing , `` behold . plato 's man . '' but back to a few good ideas .
| there are three groups in plato ’ s ideal society . these are :
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how many times does the chorus repeat in your favorite song ? and , take a moment to think , how many times have you listened to it ? chances are you 've heard that chorus repeated dozens , if not hundreds , of times , and it 's not just popular songs in the west that repeat a lot . repetition is a feature that music f... | in short , people tend to prefer things they 've been exposed to before . for example , a song comes on the radio that we do n't particularly like , but then we hear the song at the grocery store , at the movie theater and again on the street corner . soon , we are tapping to the beat , singing the words , even downloa... | have you ever disliked a song at first , and then come to like it ? why might that be ?
|
so here , this is a really quite unusual sample from goodfellow and you see this is samarium , so this is one of the lanthanides . ok so samarium is a beautiful element to work with as it can change what we refer to as oxidation states very easily which gives it many more things it can do in chemistry . it ’ s also a f... | it ’ s also a fascinating element in the sense that we can use it to date samples from the moon . so this is a sample of samarium and there ’ s is a very small amount of it here , perhaps half of a gram . but you know there 's some interesting things we can see about this package because we can see on this label it say... | why was the sample of samarium that pete showed us packed in argon ?
|
what if i told you there were trillions of tiny bacteria all around you ? it 's true . microorganisms called bacteria were some of the first life forms to appear on earth . though they consist of only a single cell , their total biomass is greater than that of all plants and animals combined . and they live virtually e... | some can release their dna upon death to be picked up by other bacteria , while others use a method called conjugation , connecting through pili to share their genes . over time , the resistant genes proliferate , creating entire strains of resistant super bacteria . so how much time do we have before these superbugs t... | a lack of antibiotics reduces overall bacterial death . how does this decrease the likelihood that antibiotic-resistant bacteria will outcompete non-resistant bacteria ?
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the city sky is , frankly , rather boring . if you look up at the patches of murk between buildings , you might be able to pick out the big dipper , or perhaps , orion 's belt . but hold on . look at that murky patch again and hold our your thumb . how many stars do you think are behind it ? ten , twenty ? guess again ... | if you looked at that thumbnail-sized patch of sky with the hubble space telescope , instead of points of light , you 'd see smudges . these are n't stars . they 're galaxies , just like our milky way .
| it is impossible to send astronauts to other stars with the current technology , yet astronomers have been actively looking for lives on exoplanets ( i.e . planets orbiting other stars ) . from what we have learned about stars , how could scientists find other life out in space even though they can not send anybody the... |
this might seem hard to believe , but right now , 300 million women across the planet are experiencing the same thing : a period . the monthly menstrual cycle that leads to the period is a reality most women on earth will go through in their lives . but why is this cycle so universal ? and what makes it a cycle in the ... | the tiny oocyte moves along the fallopian tube . a pregnancy can only occur if the egg is fertilized by a sperm cell within the next 24 hours . otherwise , the egg 's escapade ends , and the window for pregnancy closes for that month .
| an egg has _____ to be fertilized .
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every spring , hundreds of adventure-seekers dream of climbing qomolangma , also known as mount everest . at base camp , they hunker down for months waiting for the chance to scale the mountain 's lofty , lethal peak . but why do people risk life and limb to climb everest ? is it the challenge ? the view ? the chance t... | clearly , all mountains are not alike . that 's because time comes into the equation , too . when continental plates first collide , uplift happens fast .
| describe the steps of mountain formation over time .
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welcome to the ted-ed beta website tour . i 'm logan smalley , i 'm bedirhan cinar , i 'm jordan reeves , and i 'm stephanie lo . we represent the ted-ed team . we 're going to tell you about how the website is organized , about the lessons that surround each video , how you can customize or flip your own lesson , and ... | let 's get started with the home page . on the home page , you 'll find original ted-ed videos , each is a lesson recorded by an actual educator that 's visualized by a professional animator . you can nominate educators and animators in the `` get involved '' section of the site .
| how do you nominate an educator or animator ?
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the presidency of the united states of america is often said to be one of the most powerful positions in the world . but of all the u.s. presidents accused of misusing that power , only one has left office as a result . does richard nixon deserve to be remembered for more than the scandal that ended his presidency ? fi... | `` and what were these crimes ? '' `` your honor , the watergate scandal was one of the grossest abuses of presidential power in history . nixon 's men broke into the democratic national committee headquarters to wiretap the offices and dig up dirt on opponents for the reelection campaign . ''
| what did the watergate scandal involve ?
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translator : andrea mcdonough reviewer : bedirhan cinar miss gayle 's 5 steps to slam poetry , a lesson of transformation . step 1 : write it all down . `` take one memory , explore it like a new land , '' the visiting poet tells the class . `` do n't leave anything out . '' tyler sits in this high school workshop , di... | his hands reach out like shells to hold our disbelief . is this tyler speaking ? the one who keeps his eyes on the floor like they 're carrying something heavy ?
| what is tyler writing about ?
|
there 's a prevailing attitude that art does n't matter in the real world . but the study of art can enhance our perception and our ability to translate to others what we see . those skills are useful . those skills can save lives . doctors , nurses , and law enforcement agents can use painting , sculpture , and photog... | there 's a prevailing attitude that art does n't matter in the real world . but the study of art can enhance our perception and our ability to translate to others what we see . those skills are useful . those skills can save lives . doctors , nurses , and law enforcement agents can use painting , sculpture , and photog... | art can be used in which of the following professions to enhance observation and perception skills :
|
so here we have tin , but this is a different sample of tin from what people might be used to because most people see tin in foil , or they think it is tin foil that they use to wrap up the chicken , mostly that is aluminium foil . tin has the symbol sn because it comes from the latin word stannum which means tin and i... | here we see a beautiful sample of tin metal and you can see it is a really beautiful rod and it is packaged in glass to stop oxidation , but you can see a beautiful silvery shiny metal . tin has also been used very widely for coating the insides of iron and steel containers for food , that ’ s why they are called tin e... | tin soldiers were almost never made of pure tin . which alloys were used to make these soldiers for children ?
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we already know that the world is made of things , things like cats and macaroni salad , and macaroni salad is made of things like mayo and mustard and celery , which are all made of molecules . as we 'll see , these molecules are made of the same stuff , just mixed together in different ways . let 's go back to our ma... | here , again , macaroni salad provides a nice example . if you look at the pasta , you 'll notice it 's made of a lot of this stuff , starch , which is this molecule , otherwise known as amylose . turns out , if you break some bonds , amylose is made up of smaller molecules of glucose , a simple sugar .
| which is the starch molecule ?
|
translator : andrea mcdonough reviewer : morton bast i 'm a mechanical engineering professor at the university of pennsylvania , and my favorite hobby is photography . and as i travel around the world , i love taking photographs like these , so i can remember all the beautiful and interesting things that i 've seen . b... | and indeed , i think we can , and that 's at the core of a field called haptics , and this is the area that i work in . it 's all about interactive touch technology . and the way it works is , as you move your body through the world , if , as an engineer , i can make a system that can measure that motion , and then pre... | what is the word used to describe interactive touch technology ?
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what is the shape of a molecule ? well , a molecule is mostly empty space . almost all of its mass is concentrated in the extremely dense nuclei of its atoms . and its electrons , which determine how the atoms are bonded to each other , are more like clouds of negative charge than individual , discrete particles . so ,... | what is the shape of a molecule ? well , a molecule is mostly empty space . almost all of its mass is concentrated in the extremely dense nuclei of its atoms .
| by volume , a molecule is mostly ________ .
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