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On the Farm or at the Zoo? In this activity, children will discuss the relationship between people and different kinds of animals. Then they will categorize animals into two groups, farm animals and zoo animals. WHAT YOU NEED WHAT TO DO - Discuss with children the fact that people have different relationships with diff...
September 29, 2009 How Did the Box Turtle Cross the Road? With a Wildlife Crossing The HSUS helps box turtles (and other wildlife) on a Maryland road "Having once performed the spectacular feat of getting its girdles inside its ribs, [the turtle] lapsed into a state of complacent conservatism" and watched as "Eohippus ...
The Avogadro Constant Although chemists usually workA mechanical process in which energy is transferred to or from an object, changing the state of motion of the object. with moles as units, occasionally it is helpful to refer to the actual number of atomsThe smallest particle of an element that can be involved in chem...
The 20 enjoyable, interactive classroom activities that are included will help your students understand the text in amusing ways. Fun Classroom Activities include group projects, games, critical thinking activities, brainstorming sessions, writing poems, drawing or sketching, and more that will allow your students to i...
A vegetative state is a condition in which someone is awake, but not aware. People usually emerge from a coma into such a state as their brains slowly recover from injury and they start to become more alert and aware. From this state, a patient can move into a minimally conscious state and then into a state of full con...
Clouds are not only something to watch, but actually impact the weather a great deal. This is true here on Earth and on Kepler 7b, a planet roughly a thousand light years away. Using NASA's Kepler and Spitzer Space Telescopes, researchers at MIT have successfully observed the cloud patterns of an exoplanet for the firs...
The Judiciary Act of 1789, ch. 20, sec. 35, 1 Stat. 73, 92-93 (1789) created the Office of the Attorney General. Originally a one-person part-time position, the Attorney General was to be "learned in the law" with the duty "to prosecute and conduct all suits in the Supreme Court in which the United States shall be conc...
A gamma-ray pulsar is a compact neutron star that accelerates charged particles to relativistic speeds in its extremely strong magnetic field. An odd, hiccuping pulsar (shown in this illustration) was discovered in July 2012 that sped up a small bit, causing it to be missed initially by searching scientists. Credit: NA...
The calculation of the magnetic field of a current distribution can, in principle, be carried out using Ampere's law which relates the path integral of the magnetic field around a closed path to the current intercepted by an arbitrary surface that spans this path: Ampere's law is independent of the shape of the surface...
For ecologists, the most interesting sections of coastline are the areas between the highest and lowest tides, known as intertidal zones. They're wonderful places to explore, preferably when the tide's out! Although they represent only a very small proportion of the Earth's surface, they're important because they're re...
Thrust is the force that move the aircraft through the air.Thrust is generated by the propulsion system of the aircraft. There are different types of propulsion systems develop thrust in different ways, although it usually generated through some application of Newton's Third Law. Propeller is one of the propulsion syst...
Harmonics in music are notes which are produced in a special way. They are notes which are produced as part of the “harmonic series”. In physics a harmonic is a wave which is added to the basic fundamental wave. In this article we are talking about sound waves, and we can understand it clearly by looking at the strings...
April 4th 1968: Martin Luther King Jr. killed On this day in 1968, civil rights leader Martin Luther King Jr. was assassinated in Memphis, Tennessee aged just 39. The Baptist minister from Georgia first came to national attention for his leadership of the Montgomery Bus Boycott in 1955. This event is considered by many...
Photograph by Lynn Johnson, National Geographic Published May 31, 2012 This story is part of a special National Geographic News series on global water issues. Groundwater depletion will soon be as important a factor in contributing to sea-level rise as the melting of glaciers other than those in Greenland and Antarctic...
Civil War: African American Soldiers These sites are about the African American men who fought for the Union Army and Navy during the Civil War. Read letters from the soldiers and view several photographs. There are recruitment posters and other primary documents from the Civil War era. Includes links to eThemes Resour...
It was a British geologist who in the early 1920s discovered that Stonehenge, the mysterious circle of rough-hewn monuments in southern England, was roughly 4,000 years oldfar older than previously thought. He also showed that the stones themselves had been hauled from a great distance200 miles (321.8 kilometers) from ...
Ocean acidification may create an impact similar to extinction on marine ecosystems, according to a study published Monday. The study, exploring naturally acidic waters near volcanic vents in the Mediterranean Ocean off Italy, suggests that ocean acidification as a result of human emissions can degrade entire ecosystem...
It is probably an understatement to say that discipline is on the minds of many teachers. As noted by J. Ron Nelson, Ron Martella, and Benita Galand (1998), the annual Gallup poll of the public's attitude toward public schools consistently identifies the lack of discipline as the most serious problem facing schools tod...
Apollo 4 – A Great Success Space mission Apollo 4, also known as Apollo-Saturn 501 (AS-501) was an unmanned flight which orbited three times and lasted for about eight and a half hours. It was launched on November 9, 1967 from the John F. Kennedy Space Center. The mission was to test the complete Apollo command and ser...
Students will compare several eyewitness accounts of Stillman's Run, and discuss how a historian might use them. Students will act as historians and try to reconstruct what happened during Stillman's Run from the eyewitness accounts. Prior to the lesson, divide the class into three groups. Each group will be given one ...
Fossils of an arm bone and pieces of bone from the back and hips, unpacked from the drawers of London's Natural History Museum, could belong to the earliest dinosaur ever found, scientists report in the journal Biology Letters today. Fossil of the right humerus (arm bone) of Nyasasaurus parringtoni. The prominent crest...
Japan’s attempts to control the damaged nuclear reactors at the Fukushima plant by using sea water hopefully will succeed in preventing a complete disaster, but the price paid both to the nearby marine life and to the people of that battered country will be huge and long lasting. Unfortunately, the runoff of millions o...
Understanding How DNA Is Packaged In A Cell [For a printable pdf of this topic click here.] We are all familiar with the images of DNA molecules as thread-like strands of double helix. Nevertheless, our 46 chromosomes are not merely made up of naked strands of DNA. The length of straightened-out DNA in a single cell is...
CURRENTS- Rivers Through The Surf waves are formed by wind on the water. Sea waves usually result from storms, often hundreds of miles from shore. Waves are not all equal in size. Sometimes a group of larger waves comes ashore one after another. This is known as a "set" of waves. waves break, water is pushed up the slo...
Borden, Mackenzie King, and Brock Islands Borden, Mackenzie King, and Brock Islands are small, have low elevations, and lie along the northwestern edge of the Arctic Archipelago. They are the most remote and inaccessible of the Arctic Islands, and were not discovered until the Canadian Arctic Expedition of 19131918. Bo...
Although they can't stick the thermometer any of the usual places, researchers have found a way to take the temperature of a single molecule. How? A ray of light. Heat is a simple concept and a different measurement. When we measure heat, we measure a particular part of an object's energy. Specifically we measure the a...
From the Committee on Elementary Language Arts Textbooks, National Council of Teachers of English, 1990 The English language arts textbook is a familiar volume in the desks of many students across the country. Some educators look to the text as the basic tool for language arts instruction, the organizer for most of the...
In Oct. 8 Issue The Great Depression was a severe worldwide economic depression in the decade preceding World War II. The timing of the Great Depression varied across nations, but in most countries it started in about 1929 and lasted until the late 1930s or early 1940s. It was the longest, most widespread, and deepest ...
DNA polymerase, the enzyme that helps synthesize, repair, and replicate DNA molecules, can add nucleotides only in the 5' to 3' direction. In the leading strand, synthesis continues until the end of the chromosome is reached. On the lagging strand, DNA is synthesized in short stretches, each of which is initiated by a ...
In this Instructable, we will go through the steps of getting our first LED project completed. The idea is to make a simple 'flashlight' while dabbling our feet, ever so gently, in the waters of electronic hardware. The hope is to get to know a little bit of the theory of operation, while actually making a functioning ...
If you thought Iceland’s volcano that erupted in 2010—Eyjafjallajökull—was hard to pronounce, avert your eyes. A unique new record of arctic climate has just been published from Russia’s Lake El’gygytgyn— or as many researchers despairingly call it, “Lake E.” The 550 ft deep lake fills an impact crater that formed near...
This is a cutaway drawing of the proposed structure of Ganymede's interior. Click on image for full size Differentiation is a scientific term which really means "to separate". In their earliest history, elements which made the planets would part into separate regions, if the planet were warm enough. This is the akin to...
The Declaration of Independence that our Founders gave us made a proclamation of Liberty based upon 700 years of struggle with tyrannical kings – beginning in 1066 England. The Declaration is rooted in documents that go all the way back to 1100 – The Charter of Liberties, the Magna Carta, and the Bill of Rights of 1689...
Urban areas with high concentrations of buildings, roads and other artificial surface soak up heat, lead to warmer surrounding temperatures, and create "urban heat-islands." This increased heat may promote rising air and alter the weather around cities. Human activities such as land use, additional aerosols and irrigat...
Definition of Osteopenia Osteopenia is defined as a medical condition in which decreased bone density occurs because bone is lost faster than it is created. This condition is often the predecessor to osteoporosis. Osteopenia can be diagnosed with a simple procedure known as a bone density test. What Is Osteopenia? Oste...
Gondwana was an ancient supercontinent that broke up about 180 million years ago. The continent eventually split into landmasses we recognize today: Africa, South America, Australia, Antarctica, the Indian subcontinent and the Arabian Peninsula. The familiar continents of today are really only a temporary arrangement i...
Reading Curriculum is Pearson Scott Foresman's "Reading Street". Math Core Curriculum is Houghton Mifflin Harcourt's "Go Math". Every day the children will meet at our working area to do activities involving the calendar: finding the current date, working on the concepts yesterday, today, and tomorrow, learning the mon...
The Monarch Butterfly Scientific name: Danaus plexippus Wingspan: 3 3/8 - 4 7/8 inches Life span: takes a month to become an adult; dependent on season pupa emerges; longest is nine months Description of egg: spherical, ridged and white; of caterpillar: banded with cream, black & yellow stripes; of adult: bright orange...
Redirected from Capacitance A capacitor has a capacitance of one farad when one coulomb of charge causes a potential difference of one volt across the plates. Since the farad is a very large unit, values of capacitors are usually expressed in microfarads (μF), nanofarads (nF) or picofarads (pF). When the voltage across...
Aaaaaa, This Is Scary!! Rationale: This lesson teaches children about the vowel correspondence a=/a/. In order to be able to read, children must learn to recognize the spellings that map word pronunciations. In this lesson children will learn to recognize, spell, and read words containing the spelling a. They will lear...
Hannah Brown and Sarah Smith, two young teenaged Quaker girls, write letters to each other from 1857 to 1859. Both Hannah and Sarah come from strong abolitionist families, and became close friends while Sarah attended a Quaker school in Hannah's hometown of Goose Creek, Virginia. When Sarah returned to Philadelphia, th...
Border Gateway Protocol (BGP) Routing Protocol Border Gateway Protocol (BGP) is one of the core routing protocols used by most of the service providers on the Internet. Most core routing decisions on the Internet are made by BGP. The current version (version 4) of the protocol is defined in RFC4271. BGP can run as eith...
The nervous system is a complex, highly coordinated network of tissues that communicate via electro chemical signals. It is responsible for receiving and processing information in the body and is divided into two main branches: the central nervous system and the peripheral nervous system. The central nervous system rec...
Obesity describes someone who is very overweight with a high degree of body fat. Obesity is a term used to describe somebody who is very overweight with a high degree of body fat. Being a little overweight may not cause many noticeable problems, but once you are carrying a few extra kilograms, you may develop symptoms ...
Verb tenses and the three major verbs in English Like all languages, English verb tenses (times) are the future, the present and the past. Each of these times can be specified in terms of simple, continuous, perfect and perfect progressive. Let us identify each of theses time references. Present simple means that the a...
- Historic Sites The Court-Martial of Jackie Robinson He was a lieutenant in the Army of the United States: he saw no reason to sit in the back of the bus August/september 1984 \| Volume 35, Issue 5 ON JULY 6, 1944, Jackie Robinson, a twenty-five-year-old lieutenant, boarded an Army bus at Fort Hood, Texas. Sixteen mont...
Four main types of medical imaging are reviewed in this article: x-ray, ultrasound, magnetic image resonance (MRI) and CT scans. Each is used for different reasons and play pivotal roles in the early detection of diseases, diagnoses, and making the correct decision regarding treatment. There are many other, less common...
George Monck, first Duke of Albemarle, played a very important part in the Restoration Settlement that led to the return of Charles II to Great Britain. Monck was a career professional soldier who had fought on both sides during the English Civil War. However, by 1660, Monck believed that the country could best be serv...
Table Drills: Addition Facts 2 In this addition table drills worksheet, students practice their addition facts as they fill in the blanks in the 4 tables by adding 1-digit numbers to 1 or 2-digit numbers. 3 Views 0 Downloads Study Jams! Relate Addition & Subtraction Understanding the inverse relationship between additi...
Learning styles are simply different ways of learning. Most learners use a combination of visual, auditory, and kinesthetic ways of receiving information. However, one or more of these styles is usually dominant. This dominant style defines the best way for a person to learn new information. This style may not always b...
We have had good discussions on mathematical proofs, so I am planning to create a mathematical proof series that will discuss the basics such as direct proof, indirect proof, and proof by mathematical induction. But before I do that, let me continue with more examples of proof by contradiction. Proof by contradiction, ...
What is scoliosis? Scoliosis (from the Ancient Greek word for “bending”) is a medical condition that involves the curvature of the spine. Normal spines have an ‘S’ curve to them; the spines of those with scoliosis also have a curve from side to side. Scoliosis can be genetic (as a result of vertebral abnormalities deve...
by Bob Thomas Why do leaves fall off plants and how does it happen? First, all plants shed their leaves. The most obvious are the so-called deciduous trees like pecans, sycamores, cypress, tupelo, and elm, all of which shed all their leaves at once in the late fall. Others, such as magnolia, live oak, and wax myrtle, a...
Domain and Range - Problem 4 X-axis is horizontal, y=axis is vertical. Find the starting point of the graph. The x-value of this point is in the domain and the y-value of this point is in the range. When you're asked to find domain and range of a graph that's continuous, like this, sometimes it can be kind of tricky. S...
In ancient Greece the military might of the Greeks resided in its infantry forces. The Spartan forces, furthermore, gained fame among the Greek league of city-states as the most imposing and effective infantrymen. A typical Greek infantryman, called a Hoplite, went into battle in a well-organized Phalanx formation and ...
8th Grade Science – Professor Shai Density of Gas Experiment Section 3.11 – Page 54 Gas is much less dense than solids and liquids. In the early days of chemistry, some chemists made the mistake of assuming that gas had no mass, and hence 0 density. In fact, gas has density but it is about 1/1000 times as dense as soli...
1. A short pulse is really composed of narrowband signals at many different frequencies. Here is a series of four narrowband signals being added together to make a short pulse. "Narrowband" just means that the signal is long and wavy, and looks like a sine wave, like the signals in the left column. The total of all nar...
Past Three Decades Warmest on Record Fossil fuels contain the carbon drawn out of the atmosphere by land and ocean plants over millions of years. More than a century ago, Earth scientists speculated that burning those fuels—returning that huge pool of carbon to the air so rapidly—would warm the climate. In the past few...
THE FIRST WOMEN VOTERS To the Editors: In her essay “The Abortion Battlefield” [NYR, June 22], Marcia Angell writes that “women couldn’t vote in the United States until 1920.” This is incorrect. The Nineteenth Amendment, ratified in 1920, did grant the universal right of women to vote. However, for decades before this ...
Project EMPOWER: Conflict Resolution Students discuss conflict and the methods they use to resolve their conflicts. They explore alternate, positive ways to resolve conflicts. Students create their own positive resolutions to conflicts. 3 Views 7 Downloads Breaking the Muslim Monolith: Exploring Stereotypes Bringing to...
Sprains and strains are common injuries that we sustain with daily activities, recreation, and competitive sports. But what is a sprain and what is a strain? A strain is the tearing of muscle fibers. Muscle fibers are the individual units that make up your muscles. When you call upon the muscle to perform strong or rep...
How do I isolate x (or P or T...) in a formula? Rearranging equations to solve for a given variable Equations as important geological tools Although this may seem like magic, you don't have to be a "mathemagician" to do this. This page is designed to give you some tools to call upon to help you to learn some simple ste...
What is Sex? Organisms of many species are specialized into male and femalevarieties, each known as a sex.Sexual reproduction involves the combining and mixing of genetictraits: specialized cells known asgametes combine to form offspring that inherit traits from each parent. Gametes can be identical in form and functio...
The US Army operated Fort Garland in the San Luis Valley for twenty-five years, from 1858 to 1883. The fort was built to protect early settlers from Native American raids in the years before treaties, reservations, and removal made that mission obsolete. After decades of neglect, the fort was restored in the mid-twenti...
The pythagorean theorem is a fundamental part of geometry, but what is the pythagorean theorem definition? This theorem—one of many triangle theorems—shows the relationship the three sides of a right triangle has with one another. Labelling the sides touching the right angle as “a” and “b”, and the longer hypotenuse si...
The primary mission of the Ulysses spacecraft was to characterize the heliosphere as a function of solar latitude. The heliosphere is the immense magnetic bubble containing our solar system, solar wind, and the entire solar magnetic field. This vast region of interplanetary space is dominated by the ever-constant solar...
On June 28, 1914, Archduke Franz Ferdinand—heir to the Austria-Hungarian Epmire—was assassinated on the streets of Sarajevo. Three weeks later, the Austrian government decided that the only possibility was that Serbia (with whom there had been deep tensions) was solely to blame and, therefore, entirely responsible. On ...
Great explosions rang out in London’s Lower Thames Street: the sound of houses, shops, warehouses and taverns being blown up, a method intended to halt the spread of the seemingly unstoppable flames. It was September 2, 1666. The Great Fire was sweeping through London in the worst conflagration the city had seen. Event...
An ordinary fraction is a pair (a, b) of two natural numbers a and b, with b different by 0. The ordinary fraction (a, b) is written or a/b. Examples of fractions: A fraction (in Latin we have: fractus, i.e. "broken") represents a part of a whole or, any number of equal parts. When spoken in everyday English, a fractio...
You can tackle many tricky geometry questions with a single word ‘Construction’. Yes, just precisely draw the diagram as asked in the question and manually measure the unknown side/angle that has been asked… Disclaimer: Use this method only when you are unable to figure out how to solve a question. Q. 1) If BE and CF a...
Resonance is a very general physical mechanism, that takes place when two phenomena have particular frequencies (or periods) that amplify the phenomena. Talking about dynamics, resonance is one of the main mechanisms that make the minor planets' orbits umpredictable over long periods of time. Let's consider the orbit o...
This blog is for all those people learning science out there, especially Emily and the girls learning about the water cycle at Walford. Have you ever wondered what happens to a raindrop once it falls from the sky? What happens to it depends on where it falls. It may fall in a river or a lake, which flows out to the sea...
Under the heading of language as art, "Calligraphy means 'good' 'writing'. Chinese calligraphy is an art form, and calligraphers are highly respected. There are several styles of writing: Seal, official or clerical, regular, running or semi-cursive, and cursive. Each one has its own characteristics and purpose. Calligr...
[Updated 24 July 2017 to fix link to second video.] Engaging children in their school is not the same as engaging children in learning. I’m a huge fan of families being engaged with schools but we also need to recognise that families can engage their children in learning in many other ways as well. The Family-School an...
A-level Applied Science/Choosing and Using Materials/Properties - 1 Properties of materials - 1.1 Stiffness - 1.2 Stress - 1.3 Ultimate tensile strength - 1.4 Strain - 1.5 Young modulus - 1.6 Elasticity and Plasticity - 1.7 Brittleness - 1.8 Ductility - 1.9 Electrical conductivity - 1.10 Thermal conductivity - 1.11 The...
These resources can be used for free for your personal classroom use. Savvy Subitizing Cards - These cards contain the numbers 1-10, but for each number it has a card that shows the numeral, finger pattern, ten frame, rekenrek, tally marks, and dot patterns. If you don't want to make your own, you can purchase a deck o...
Continuity and change The political history of 18th-century France can be conceptualized in terms of the double heritage and the problems it entailed. The discussion may be linked to two issues: first, the economic transformation of a traditional and essentially agricultural society by both commerce and ideas; and, sec...
Juneteenth, also known as Freedom Day or Emancipation Day, is a holiday of notable significance for many African Americans. June 19, 1865, highlights the abolition of slavery in the state of Texas, marking a historic moment in American history and the culmination of President Abraham Lincoln’s Emancipation Proclamation...
Experimental probability (EP) is probability based on data collected from repeated trials. Let n represent the number of times an experiment is done. Let p represent the number of times an event occured while performing this experiment n times. Example #1: A manufacturer makes 50,000 cell phones every month. After insp...
Two widely accepted principles about learning—learners construct their own knowledge and learning is an inherently social phenomenon—support the use of group learning. Working in small groups provides learners with opportunities to articulate ideas and understandings, uncover assumptions and misconceptions, and negotia...
A respiratory control center at the base of your brain controls your breathing. This center sends ongoing signals down your spine and to the muscles involved in breathing. These signals ensure your breathing muscles contract (tighten) and relax regularly. This allows your breathing to happen automatically, without you ...
During evolution, plants had to learn to cope with stress factors such as drought or high salt concentrations in soil. Biologists working with Professor Dr. Ralf Reski and Dr. Wolfgang Frank at the University of Freiburg, in cooperation with British researchers, have discovered a protein involved in the transduction of...
The major agents of socialization are the family, the school, peer groups and media. Socialization is a process that starts at birth and continues through the lifespan. Each person learns values, beliefs and social norms through socialization. This process also influences a person's identity and role within society.Con...
For as long as human beings could create texts (or even talk), certain groups of people have tried to control or restrict people’s access to such books, songs, speeches and ideas. This is called censorship. In this unit we will investigate why certain books have been censored or banned as well as learn about how censor...
Planking of this ship was not of a clinker-built type as a tile of a house roof and as they did it earlier but it was a carvel-built planking: one board closely coincided with the other. Though this type of planking was known before, invention of such a method of planking belonged to a shipmaster from Brittany Julian w...
Attention Deficit (Hyperactivity) Disorder (ADD / ADHD) Attention Deficit Disorder (ADD) or Attention Deficit Hyperactivity Disorder (ADHD) is a condition where characteristics such as inattentiveness, hyperactivity and impulsiveness impede an individual from performing at their best. Children and adults with ADD / ADH...
Display behaviour, ritualized behaviour by which an animal provides specific information to others, usually members of its own species. Virtually all higher animals use displays to some extent. The best-known displays are visual ones—and some biologists restrict the term display to visual signals or gestures—but many a...
Christopher Columbus is a famous Italian explorer, born Genoa, Italy in 1451. He learned many sciences and read many Marco Polo books, which influenced him to start journey himself. In the beginning, no one wanted to fund his journey, cause they all thought that the world has already been discovered. The only one who a...
The sun, which radiates roughly as a black body at around 6000 °K (see figure below), emits light with various wavelengths including the ultraviolet, visible, and infrared areas of the electromagnetic spectrum. However, the solar irradiance, which is the amount of radiant energy received from the sun per unit area per ...
One of the musical structures we must teach our students is that of phrasing, or what Lerdahl & Jackendoff refer to as grouping. Basic to musical phrases is the concept of antecedent and consequent phrases. Antecedent phrases are complete phrases that end on a pitch of relative instability or tension, resulting in the ...
Researchers examined lead levels in dirt drilled from two Roman harbor sites, Ostia and Portus, on the Tiber River. The samples spanned 1000 B.C. to A.D. 1000. Up until around 200 B.C., harbor waters were pristine, but then contamination started to creep in. The most likely source of lead would have been runoff from pi...
One of the great joys of parenting is listening to your child learn to speak. However for some, this process causes concern, frustration, and social isolation. "I couldn't wait until Cooper could talk. Now, every time he speaks I'm a nervous wreck," admits Susan, a mother of a 7 year old child that stutters. "Everyone ...
Children with autism frequently have difficulty controlling their actions, which can get them into trouble at home and in school. In order to reinforce good behavior, teachers and parents of autistic children need to focus on the positive and respond to their need for structure. If autistic children are not respecting ...
Junkers were the landed aristocracy in Eastern Germany who wielded great political power throughout the 19th century and well into the 20th through the end of World War II. The Junkers were most prevalent in Prussia, so as went Prussia's fortunes, so too went theirs. As the saying went in the 19th century, "Prussia rul...
Upon completing this unit, students will be able to: 1. Analyze how and why exchanges of people, resources, trade, and ideas intensified and accelerated in the world as a whole between 1400 and 1800. 2. Describe political, economic, technological, scientific, and cultural exchanges that took place among major parts of ...
For the first time, astronomers have spotted a critical moment in the life of galaxies: high-speed eruptions of gas that may halt the birth of stars. Galaxies, such as our own Milky Way, are vast islands of stars littering space. How galaxies' star populations grow, and how they stop growing, could be explained by erup...
Congenital nephrotic syndrome is a kidney condition that begins in infancy and typically leads to irreversible kidney failure (end-stage renal disease) by early childhood. Children with congenital nephrotic syndrome begin to have symptoms of the condition between birth and 3 months. The features of congenital nephrotic...
Thomas Jefferson’s government did not originally intend to acquire the Louisiana Purchase. Jefferson was chiefly concerned with preserving American trading access to the Mississippi River and the city of New Orleans. Amid the turmoil of the Napoleonic Wars in Europe and a slave revolt in what is now Haiti, it was uncle...
First in a series of articles in which writers debate which scientific discipline was responsible for the most important scientific discovery. Daniel Rollins argues for Chemistry. Antoine Lavoisier (1743 –1794) was a French aristocrat who has been called the “father of modern chemistry”. As well as helping develop the ...
On October 7, 1914, advancing German forces bombard the Belgian city of Antwerp, as Belgian troops and their British allies struggle to resist the onslaught. After the mighty fortress city of Liege fell to the Germans in the opening weeks of World War I, King Albert I ordered the Belgian army’s remaining 65,000 troops ...

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