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2006 08 11
By Ker Than | usatoday.com
A two-year survey of enormous interstellar dust clouds has turned up eight organic molecules in two different regions of space. One is a stellar nursery awash in light while the other is a cold, starless void.
The finding, detailed in the current issue of Astrophysical Journal, sup... | <urn:uuid:41049535-bf85-4cad-888c-f9251e6b55c0> | 3.28125 | 952 | News Article | Science & Tech. | 36.589002 | 3,900 |
WASHINGTON (AP) — It’s a tie: Last year equaled 2005 as the warmest year on record, government climate experts reported Wednesday.
The average worldwide temperature was 1.12 degrees Fahrenheit (0.62 degree Celsius) above normal last year. That’s the same as six years ago, the National Climatic Data Center announced.
Cl... | <urn:uuid:b3366ce9-ab3e-402e-aba7-c46e3047358d> | 3.15625 | 573 | News Article | Science & Tech. | 43.111518 | 3,901 |
Oct. 16, 2007 Astronomer Robert Quimby has done it again. Found the most luminous supernova ever, that is.
Quimby discovered the current record holder, supernova 2006gy, last year as part of his Texas Supernova Search project. Now he announces that a supernova he discovered earlier in the project is actually twice as l... | <urn:uuid:54798a5a-d9ab-4067-9a7a-36ca6ef84136> | 3.125 | 1,064 | News Article | Science & Tech. | 44.215761 | 3,902 |
May 28, 2009 Overfishing and disease have decimated shellfish populations in many of the world's temperate estuarine and coastal ecosystems. Smithsonian scientists, led by Whitman Miller, ecologist at the Smithsonian Environmental Research Center in Edgewater, Md., have discovered another serious threat to these valuab... | <urn:uuid:48082862-a80d-4837-8e13-ceec5d42a986> | 3.609375 | 955 | News Article | Science & Tech. | 19.850891 | 3,903 |
July 18, 2011 A University of Connecticut scientist has perfected a method for creating quick-changing, variable colors in films and displays, such as sunglasses, that could lead to the next hot fashion accessory.
The new technology also has captured the interest of the U.S. military as a way to assist soldiers who nee... | <urn:uuid:998b0449-6336-484f-b7f8-3d9b3392bae7> | 3.046875 | 881 | News Article | Science & Tech. | 46.290476 | 3,904 |
Apr. 25, 2012 The star cluster NGC 6604 is shown in this new image taken by the Wide Field Imager attached to the 2.2-metre MPG/ESO telescope at the La Silla Observatory in Chile. It is often overlooked in favour of its more prominent neighbour, the Eagle Nebula (also known as Messier 16), that lies a mere wingspan awa... | <urn:uuid:ddb4233c-fab3-421c-88f5-05e102345f0b> | 3.5625 | 633 | Knowledge Article | Science & Tech. | 52.092513 | 3,905 |
Mar. 19, 2013 A sequence of radar images of asteroid 2013 ET was obtained on March 10, 2013, by NASA scientists using the 230-foot (70-meter) Deep Space Network antenna at Goldstone, Calif., when the asteroid was about 693,000 miles (1.1 million kilometers) from Earth, which is 2.9 lunar distances.
The radar imagery su... | <urn:uuid:07e74adc-480e-4963-aa6e-9c2c9f5f8aca> | 4.09375 | 426 | News (Org.) | Science & Tech. | 46.752857 | 3,906 |
NEW YORK -- Disease has killed more than 90 percent of some bat populations in Northeastern states, according to a survey released yesterday by the New York State Department of Environmental Conservation.
The DEC survey in New York, Connecticut and Vermont examined 23 caves that are believed to have once been home to m... | <urn:uuid:ab85d212-904a-4ff8-99bb-711165269d4d> | 2.90625 | 543 | News Article | Science & Tech. | 44.904933 | 3,907 |
The community wiki for GLIBC
The official and canonical GLIBC website is http://www.gnu.org/software/libc/
Any Unix-like operating system needs a C library: the library which defines the "system calls" and other basic facilities such as fopen, malloc, printf, exit etc.
The GNU C Library is used as the C library in the ... | <urn:uuid:ed48bde2-5e8c-43d0-8af3-ce51e2e47e2b> | 3.140625 | 1,081 | Knowledge Article | Software Dev. | 60.859511 | 3,908 |
The Rain-shadow Effect
Sheltered by mountains
by Philip Eden
"Rain shadow" is a phrase often used by meteorologists in their day-to-day work, and is occasionally mentioned by television weather forecasters. Some may regard it as a solecism, but it well describes the phenomenon whereby much less rain falls on the lee si... | <urn:uuid:8883653a-8aee-43cb-8b53-ebe9bd34cc3a> | 2.859375 | 365 | Nonfiction Writing | Science & Tech. | 48.883738 | 3,909 |
TEXTAREA - Multi-line Text Input
The TEXTAREA element defines a form control for the user to enter multi-line text input. While TEXTAREA is most useful within a FORM, HTML 4.0 allows TEXTAREA in any block-level or inline element other than BUTTON. However, Netscape Navigator will not display any TEXTAREA elements outsi... | <urn:uuid:fbce2fc6-6a88-4729-8221-563495a12ef0> | 2.75 | 656 | Documentation | Software Dev. | 40.277357 | 3,910 |
Tungsten: the essentials
Pure tungsten is a steel-gray to tin-white metal. Tungsten has the highest melting point and lowest vapour pressure of all metals, and at temperatures over 1650°C has the highest tensile strength. The metal oxidises in air and must be protected at elevated temperatures. It has excellent corrosi... | <urn:uuid:2c0fde25-fe72-4273-8b07-11be50eb012b> | 2.9375 | 228 | Knowledge Article | Science & Tech. | 38.422224 | 3,911 |
Nov 07 2012
Here are clouds we never see at home.
Nacreous clouds are named for their iridescence. Like nacre, the mother of pearl substance that lines oyster shells and pearls, they reflect all the colors of the rainbow.
They’re also called polar stratospheric clouds (PSCs) because they form in the lower stratosphere ... | <urn:uuid:20e6f283-ebec-440e-907f-1a359b82cf0d> | 3.859375 | 338 | Personal Blog | Science & Tech. | 57.295116 | 3,912 |
FishBaseFishBase is a comprehensive database of information about fish.
As of 2003, it included descriptions of over 27,000 species, over 137,000 common names in hundreds of languages, over 34,000 pictures, and references to over 29,000 works in the scientific literature.
In 1987, Daniel Pauly, inspired by cataloging w... | <urn:uuid:e3c0fae9-763b-4561-a5d7-f74cf0608fca> | 2.96875 | 467 | Knowledge Article | Science & Tech. | 36.067357 | 3,913 |
Larsen C project to monitor ice shelf's health before its eventual collapse
Posted October 3, 2008
Konrad Steffen is one of the world’s leading experts on climate change in Greenland, having traveled to the ice-covered island every year since 1990. He oversees a network of 22 weather stations that collect data about th... | <urn:uuid:a997ef40-dad6-457d-aaff-06393d9741f3> | 3.3125 | 847 | News Article | Science & Tech. | 36.237562 | 3,914 |
Saturn's moon Iapetus has many unique features that stand out even among the odd Solar System satellites. Its shape is very walnut-like: flattened at the poles, bulging strongly at the equator, with an equatorial mountain ridge nearly 20 kilometers high running about three-quarters of its circumference. Unlike any othe... | <urn:uuid:3abd510d-907c-407d-a672-1070a559d9fe> | 3.984375 | 863 | News Article | Science & Tech. | 38.156436 | 3,915 |
Libbrecht, K. G. and Black, E. D. and Hirata, C. M. (2003) A basic lock-in amplifier experiment for the undergraduate laboratory. American Journal of Physics, 71 (11). pp. 1208-1213. ISSN 0002-9505 http://resolver.caltech.edu/CaltechAUTHORS:LIBajp03
- Published Version
See Usage Policy.
Use this Persistent URL to link ... | <urn:uuid:8889feab-6810-4335-b85a-727a2db8e58a> | 2.5625 | 302 | Academic Writing | Science & Tech. | 44.614286 | 3,916 |
Source code: Lib/pickletools.py
This module contains various constants relating to the intimate details of the pickle module, some lengthy comments about the implementation, and a few useful functions for analyzing pickled data. The contents of this module are useful for Python core developers who are working on the pi... | <urn:uuid:f656d814-737b-460f-a3e2-bb71acfa6d35> | 2.828125 | 654 | Documentation | Software Dev. | 49.975026 | 3,917 |
All greenhouse gases except CO2 and H2O are removed from the atmosphere primarily by chemical processes within the atmosphere. Greenhouse gases containing one or more H atoms (e.g., CH4, HFCs and HCFCs), as well as other pollutants, are removed primarily by the reaction with hydroxyl radicals (OH). This removal takes p... | <urn:uuid:e934b4a9-ea1f-4c1a-93c9-5bdd34fdcbf1> | 3.828125 | 1,052 | Academic Writing | Science & Tech. | 31.789619 | 3,918 |
Partial Pressure and Kp
In a mixture of two or more gases, each component gas contributes to the total pressure of the system. For example, the earth's atmosphere is made up of (by mole percent) 78% nitrogen, 21% oxygen, .9% argon, .03% carbon dioxide, and other trace gases. Each gas contributed to the total pressure o... | <urn:uuid:439c7842-81ef-46bb-9008-4aae2eac5679> | 3.765625 | 400 | Academic Writing | Science & Tech. | 62.557762 | 3,919 |
Proofs of the Two-Color Map Theorem
Date: 03/19/2003 at 19:57:25 From: Alex Subject: The two-color map theorem How do you prove, using mathematical induction, the two-color map theorem? Two-color map theorem: Suppose a map is drawn using only lines that extend to infinity in both directions; two colors are sufficient t... | <urn:uuid:e30b79bf-1043-4519-82d5-dd9958428c7b> | 3.359375 | 2,128 | Comment Section | Science & Tech. | 71.516984 | 3,920 |
2007-10-28 / 19:59 / dave
From the wikipedia entry
Forth parsing is simple, as it has no explicit grammar. The interpreter reads a line of input from the user input device, which is then parsed for a word using spaces as a delimiter; some systems recognise additional whitespace characters. When the interpreter finds a ... | <urn:uuid:ed7f545e-027b-453e-a2af-30429432c2f2> | 3.859375 | 1,007 | Personal Blog | Software Dev. | 50.376964 | 3,921 |
At time there are talks about quantum computers and lot of talks and discussion on its exponential speed. But studying in some more details it makes reference to "Heisenberg uncertainty principle", which simply says that either position or momentum can be calculated for any electron. If we already know the limitation, ... | <urn:uuid:3b8c46d6-1647-4f0e-834f-e8cb5a5226ab> | 2.75 | 230 | Q&A Forum | Science & Tech. | 42.095508 | 3,922 |
Polar coordinatesThe representation of a complex number as a sum of a real and imaginary number, z = x + iy, is called its Cartesian representation.
Recall from trigonometry that if x, y, r are real numbers and r 2 = x 2 + y 2, then there is a unique number θ with 0 ≤ θ < 2π such that
sin(θ) = y / r.
That number is
|θ|... | <urn:uuid:cba335e3-a7f4-4777-8c73-6cfdf2fcd305> | 4.25 | 641 | Tutorial | Science & Tech. | 80.570712 | 3,923 |
Monday, April 4, 2011
Energy: Understanding Nuclear Energy
In light of recent events in Japan, or just in the course or your curriculum, you may be looking for ways to help your students understand nuclear energy.
I just stumbled across this publication, Nuclear Experiments You Can Do, from the Charles Edison Fund..
Th... | <urn:uuid:c4cb84c7-c861-4daa-be41-e77f7ed18194> | 2.71875 | 146 | Personal Blog | Science & Tech. | 46.351299 | 3,924 |
Launch Date: August 04, 2007
Mission Project Home Page - http://phoenix.lpl.arizona.edu/index.php
Named for the mythological bird that rose out of the fire to be reborn, Phoenix was the new Lander for NASA's last Mars mission landing in the Martian northern plains in May 2008.
The Mission had two bold objectives: (1) s... | <urn:uuid:b37ee42c-da80-4993-9955-19c7a23f09e5> | 3.875 | 567 | Knowledge Article | Science & Tech. | 36.614652 | 3,925 |
In the 1950s, the US Air Force was worried about the survival of their pilots if forced to eject at high altitude. Tests with dummies didn’t go so well, so they worked on developing a new parachute design that wasn’t so likely to kill its wearer. But eventually, a human being had to test it. That was Project Excelsior:... | <urn:uuid:a9615d07-315d-4ca1-bec2-35e4ee6d4f79> | 2.96875 | 571 | Personal Blog | Science & Tech. | 63.602215 | 3,926 |
Mission Type: Lander
NASA Center: Jet Propulsion Laboratory
InSight (Interior Exploration using Seismic Investigations, Geodesy and Heat Transport) is a proposed NASA Discovery Program mission that will place a single geophysical lander on Mars to study its deep interior. But InSight is more than a Mars mission - it is... | <urn:uuid:446eda91-e78e-4d62-b28d-c97fbe3a329b> | 3.875 | 1,134 | Knowledge Article | Science & Tech. | 16.180312 | 3,927 |
The effort to understand conditions on Mars leads researchers to some of the most extreme environments on Earth, including Chile's Atacama Desert. Although no plants or animals live in the desert's super-dry core, microscopic organisms exist beneath a crusty varnish on some rocks, which may be like some rocks on Mars. ... | <urn:uuid:dafb3f19-5aa3-4b68-b650-dca152d21d47> | 4.09375 | 468 | Audio Transcript | Science & Tech. | 49.458079 | 3,928 |
By Zeke Barlow
The black abalone that were once thick in the waters off the California coast earned a dubious distinction today when biologists took the final steps in putting the mollusk on the Endangered Species List. ...
The wording in the listing of the abalone brings up how global warming may affect the endangered... | <urn:uuid:ad7a2a88-2bb7-4011-81db-75b105fad5b8> | 3.28125 | 283 | News Article | Science & Tech. | 50.716724 | 3,929 |
USGS Groundwater Information: Branch of Geophysics
Carole D. Johnson, John W. Lane, Jr., and Frederick D. Day-Lewis, United States Geological Survey
Time-lapse monitoring of subsurface processes is an emerging and promising area of hydrogeophysics. The combined use of non-invasive or minimally invasive geophysical meth... | <urn:uuid:14f1648e-1311-4aee-a62a-4ef6c37e19f5> | 2.703125 | 620 | Academic Writing | Science & Tech. | 16.716389 | 3,930 |
Hair color and static
The hypothesis that hair color will not affect the amount of static electricity produced is proven to be correct.
Natural hair is made from keratin which is the same type of protein that is also found on nails and skin. The static charges in our hair are carried by keratin. The proteins that deter... | <urn:uuid:1037c301-9a6c-4727-aeb5-ca2d56588db2> | 3.15625 | 220 | Tutorial | Science & Tech. | 52.602379 | 3,931 |
Science Fair Project Encyclopedia
Complete algebraic variety
- X × Y → Y
is a closed map, i.e. maps closed sets onto closed sets. (NB Here the cartesian product variety does not carry the product topology, in general; the Zariski topology on it will except in very simple cases have more closed sets.)
The most common ex... | <urn:uuid:de5b1578-62fc-4074-bc66-68d6ce805ea5> | 3.21875 | 232 | Knowledge Article | Science & Tech. | 41.014242 | 3,932 |
Ever Heard of a Butterfly Farm?
Did you know that some butterflies are as big as dinner plates? That they're talented chemists? That the international butterfly trade is a booming business?
Most of the world's butterflies, and certainly its largest and most beautiful ones, are found in tropical rain forests. Habitat de... | <urn:uuid:22eed861-6c04-4063-ab4e-e48fda5b0975> | 3.65625 | 202 | Knowledge Article | Science & Tech. | 42.236571 | 3,933 |
Perfecting Catalytic Arrays
AUGUST 13, 2009
Catalysts speed up chemical reactions and remain largely unchanged themselves at the end of the process. This apparently simple statement harbors a chemical secret: Catalysts are much more complicated than that. Now, work carried out at the Argonne Advanced Photon Source (APS... | <urn:uuid:4b135f8c-77eb-46b0-91bd-2494aa882977> | 3.265625 | 1,213 | Knowledge Article | Science & Tech. | 14.134662 | 3,934 |
Dung beetles guided by Milky Way
They may be down in the dirt but it seems dung beetles also have their eyes on the stars.
Scientists have shown how the insects will use the Milky Way to orientate themselves as they roll their balls of muck along the ground.
Humans, birds and seals are all known to navigate by the star... | <urn:uuid:a49e46b9-5a9c-4368-9a11-98a591e762ec> | 3.625 | 721 | News Article | Science & Tech. | 61.551488 | 3,935 |
Satellite View Selection
08:30 UTC on Saturday 25 May 2013 | Cloud/surface composite, Australia
Images from Japan Meteorological Agency satellite MTSAT via Bureau of Meteorology.
Australian Government Bureau of Meteorology
National Meteorological and Oceanographic Centre
Satellite Notes for the 0000UTC chart on 26 May ... | <urn:uuid:ec1fab25-a253-4a54-ba19-fc2bc98f3c39> | 2.546875 | 213 | Knowledge Article | Science & Tech. | 30.660813 | 3,936 |
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24 August 2007
Cardiff scientists exploring the safe storage of hydrogen to power vehicles as an environmentally friendly alternative to petrol have made a promising new discovery.
Having already developed an organic polymer capable of storing 1.7 per cent hydrogen by weight, Pro... | <urn:uuid:68437181-528a-4d8a-a7f4-44c2d39f8dbe> | 3.171875 | 474 | News (Org.) | Science & Tech. | 27.400941 | 3,937 |
An air bubble of volume 21 cm3 is at the bottom of a lake 40 m deep where the temperature is 3.0°C. The bubble rises to the surface, which is at a temperature of 25°C. Take the temperature of the bubble to be the same as that of the surrounding water. What is the volume of the bubble just as it reaches the surface?
Ans... | <urn:uuid:b03af770-0eff-401e-88e5-e6bbd15874db> | 3.140625 | 82 | Q&A Forum | Science & Tech. | 79.224817 | 3,938 |
NOAA’s updated outlook for the 2004 Atlantic hurricane season indicates a 45% probability of an above-normal season, a 45% probability of a near-normal season, and only a 10% chance of a below-normal season, according to a consensus of scientists at the National Oceanic and Atmospheric Administration's (NOAA) Climate P... | <urn:uuid:3b8783a7-bdfa-4a0b-91cc-d34732eaf2b9> | 2.703125 | 2,085 | Knowledge Article | Science & Tech. | 34.375604 | 3,939 |
The New York Times reports that the Obama Administration is set to announce a large-scale effort to map the activity of the human brain, promising to do for brain research what the Human Genome Project did for genetics.
The decade-long project, likely to cost billions of dollars, "is expected to be part of the presiden... | <urn:uuid:d48b5f61-dfce-41d5-847f-f7f9de5cbbae> | 2.828125 | 408 | News Article | Science & Tech. | 34.359545 | 3,940 |
The Dired command ! (
dired-do-shell-command) reads a
shell command string in the minibuffer, and runs that shell command on
one or more files. The files that the shell command operates on are
determined in the usual way for Dired commands (see Operating on Files). The command X is a synonym for !.
The command & (
dire... | <urn:uuid:afc55b48-a776-4e86-a35d-1f26ce229aee> | 2.765625 | 534 | Documentation | Software Dev. | 58.906667 | 3,941 |
March 12, 2013
PASADENA, Calif. -- An analysis of a rock sample collected by NASA's Curiosity rover shows ancient Mars could have supported living microbes.
Scientists identified sulfur, nitrogen, hydrogen, oxygen, phosphorus and carbon -- some of the key chemical ingredients for life -- in the powder Curiosity drilled... | <urn:uuid:c9f40294-3095-4d6d-8046-e471a43a49a6> | 3.90625 | 968 | News (Org.) | Science & Tech. | 38.0092 | 3,942 |
The Roiling Clouds of Katrina
Quick Time Movie for PIA04383
Roiling Clouds of Katrina
This image pair and animation from NASA's Multi-angle Imaging SpectroRadiometer (MISR) shows the strong convective development of Hurricane Katrina on Saturday, August 27 as it moved west through the Gulf of Mexico. Over 7 minutes dur... | <urn:uuid:e654a50d-72ba-418f-a769-68e4b2c1cba3> | 3.234375 | 967 | Knowledge Article | Science & Tech. | 39.216232 | 3,943 |
The optical microscope, invented 400 years ago, throughout these years furnished a tremendous amount of knowledge. In particular, the microscope has been used widely in life sciences. After about 300-year history of instrumenal development and reach harvest of discoveries, it was found by Ernst Abbe in 1873 that the wa... | <urn:uuid:7c67b54e-12a2-4580-a330-5ba1785568fa> | 3.34375 | 2,096 | Academic Writing | Science & Tech. | 29.649441 | 3,944 |
05/28/2012 01:02:00 PM EST
Acidification of Oceans May Affect the Brains of Fish
Yesterday's post noted some of the adverse consequences that are likely to arise from acidification of oceans. Another recent study shows that such acidification can influence the behavior of fish because of impacts on their brains; the re... | <urn:uuid:ae942353-bc37-4d60-b32e-a9a62399df37> | 3.46875 | 401 | News Article | Science & Tech. | 42.087824 | 3,945 |
Globe-Trotting Gnome Highlights Earth's Weird Gravity
Here, the gnome is standing at the Antarctic South Pole. Turns out, the gnome (and you) weighs more at the South Pole than at the equator.
There aren't too many gardens at the South Pole. But there are, apparently, garden gnomes.
A globe-trotting little garden gnome... | <urn:uuid:8a7f7fc2-0447-476f-9561-9e88ab2142aa> | 3 | 689 | News Article | Science & Tech. | 52.90093 | 3,946 |
Frank Morgan's Math Chat
December 3, 1998
ANSWER. The largest object visible to the naked eye is the Andromeda Galaxy, with a diameter of over 100,000 light years (about one quintillion miles). It is so big that even though it is over two million light years away, its apparent size (to a sensitive instrument) is about ... | <urn:uuid:1311c2ea-e044-4d3d-b668-dab897e78b50> | 3.484375 | 356 | News (Org.) | Science & Tech. | 74.094615 | 3,947 |
Mock-up of the XMM-Newton at the Cité de l'espace, Toulouse
|Launch date||10 December 1999|
|Launched from||Guiana Space Centre, Kourou, French Guiana, South America|
|Launch vehicle||Ariane 5|
|Mission length||13 years, 4 months, and 20 days elapsed|
|Type of orbit||Elliptical|
|Orbit height||7,000 to 114,000 km|
|Orb... | <urn:uuid:aeb07728-366f-42ff-89da-90833f509977> | 2.96875 | 1,055 | Knowledge Article | Science & Tech. | 39.86905 | 3,948 |
Synthesized form of niobium oxide developed at UCLA has a great facility for storing energy.
Researchers have developed a transparent diode with copper-alloyed zinc sulfide as p-type conducting material.
Scientists engineer a chemically stable and atomically sharp lanthanum aluminate monolayer between LaAlO3 and stront... | <urn:uuid:1c460e42-15c5-4ee9-ab9c-95da24f924b4> | 2.65625 | 236 | Content Listing | Science & Tech. | 12.735341 | 3,949 |
Congruent Triangles - Two angles and included side (ASA)
Definition: Triangles are congruent if any two angles and their
included side are equal in both triangles.
There are five ways to test that two triangles are congruent. This is one of them (ASA). For a list see
If any two angles and the included side are the same... | <urn:uuid:9cc3e22e-390a-44b9-a269-e08a22e50ff3> | 3.984375 | 322 | Tutorial | Science & Tech. | 60.649251 | 3,950 |
Michael Marshall, environment reporter
Humans are pumping extra carbon dioxide into the atmosphere, but isn't that just plant food?
After all, plants take in CO2 and use it to make sugar, so any extra CO2 ought to be good news for plants - and as a bonus they should take the stuff out of the atmosphere for us.
This is ... | <urn:uuid:0c914da0-4cca-47ca-afd6-1caf0a65ea1d> | 3.875 | 724 | News Article | Science & Tech. | 47.914423 | 3,951 |
Report an inappropriate comment
Thu Jan 08 10:22:22 GMT 2009 by Colin Barras
The fuel cell is similar in some ways to a non-rechargeable battery, but there are important differences. Batteries operate in a sealed environment, whereas fuel cells need to receive oxygen, and release water and/or CO2 depending on the cell ... | <urn:uuid:974e2630-e6f5-4095-b1a3-bd7d151831c9> | 3.78125 | 208 | Comment Section | Science & Tech. | 38.660172 | 3,952 |
The sexual habits of penguins, false widow spiders marching north, the smallest mini mammoth and possibly the first dinosaur. This varied bunch were among the top 10 science and nature news stories from 2012.
Nyasasaurus parringtoni may have looked like this early dinosaur, Eoraptor, from Argentina. © De Agostini UK Lt... | <urn:uuid:0baeaab0-9fa2-4a43-ad1f-2e590a669310> | 3.390625 | 520 | Content Listing | Science & Tech. | 46.944167 | 3,953 |
Over the last few years, knowledge about the effects of rising heat and CO2 levels in the atmosphere on coral reefs, those bizarre, multicultural underwater gardens, has proliferated. One of the newest reports, published this past March, predicts that if atmospheric carbon levels reach double what they are now – 750 pa... | <urn:uuid:b4f4893c-4d73-42f6-95b6-e8ba9a7f2a17> | 3.578125 | 241 | Truncated | Science & Tech. | 32.240406 | 3,954 |
From University of California - Los Angeles
UCLA receives $4.8 million grant to support research in world’s best plasma physics facility In experiments that last a hundred-millionth of a second or just slightly longer, physicists are learning the secrets of plasma — the turbulent, hot, ionized, gas-like matter that may... | <urn:uuid:11e5d1f4-0107-42e3-85d2-1f17e5a63280> | 3.265625 | 1,483 | News Article | Science & Tech. | 40.77 | 3,955 |
Researchers in nanomedicine have long dreamed of an age when molecular-scale computing devices could be embedded in our bodies to monitor health and treat diseases before they progress. The advantage of such computers, which would be made of biological materials, would lie in their ability to speak the biochemical lang... | <urn:uuid:03f6ff15-61eb-45db-a179-aa6709520962> | 3.6875 | 438 | Knowledge Article | Science & Tech. | 28.225321 | 3,956 |
As Thurston’s article approached its 30th anniversary this year, all but four of the 23 main questions had been settled, including the geometrization conjecture, which the Russian mathematician Grigori Perelman proved in 2002 in one of the signal achievements of modern mathematics. The four unsolved problems, however, ... | <urn:uuid:9d1fe6f9-c61c-4f9c-be94-878581f8de0f> | 2.78125 | 1,068 | Knowledge Article | Science & Tech. | 37.76296 | 3,957 |
In the summer of 2006 Marshall W. Nirenberg chanced on a just published biography of a prominent molecular biologist. It was entitled Francis Crick: Discoverer of the Genetic Code.
“That’s awful!” he thought. “It’s wrong—it’s really and truly wrong!”
Nirenberg himself, along with two other scientists, had received the ... | <urn:uuid:5359d1d2-6647-44bd-bb29-7195b9906057> | 2.90625 | 941 | Nonfiction Writing | Science & Tech. | 45.857469 | 3,958 |
I’ve written a number of blogs now where I try to get to grips with some of the numbers underlying global warming. So far, I agree that the historic figures do demonstrate global warming over the last 100+ years within a relatively wide band of possible growth rates, and that the evidence shows that the levels of carbo... | <urn:uuid:52f0fe79-0ac1-478a-ac70-d1d7661da1ff> | 3.046875 | 3,842 | Personal Blog | Science & Tech. | 54.815797 | 3,959 |
The death of radio astronomer Sir Bernard Lovell
The Lovell Telescope at Jodrell Bank, Cheshire, UK on 12 May 1976. Picture Nick Lomb
Sir Bernard Lovell, the man forever associated with the giant 250 foot (76-metre) radio telescope near Manchester UK, has died on 6 August 2012 at the age of 98. At his death he was Emer... | <urn:uuid:df7ec3b8-73c6-4b2d-befe-59edd1335716> | 2.921875 | 669 | Nonfiction Writing | Science & Tech. | 37.963504 | 3,960 |
Asteroid Re-Named 'Wikipedia'
Wikipedia is loaded with articles on space. And now Wikipedia is in space, too — specifically, as an asteroid newly named "Wikipedia." The Committee for Small Body Nomenclature has renamed a main belt asteroid, previously labeled number 274301, with an official moniker: Henceforth, it's kn... | <urn:uuid:18f35461-3e7d-4a80-b75b-bacd8a296ac9> | 3.3125 | 286 | News Article | Science & Tech. | 43.862991 | 3,961 |
Paintballs proposed as defense against ASTEROID ATTACK
Just in time to to deflect Apophis, destroyer of worlds
An MIT graduate student has devised a plan to save the world from destruction by an inbound asteroid using a novel weapon: interplanetary paintballs.
Sung Wook Paek of the Cambridge, Massachsetts, brainiac aca... | <urn:uuid:73c7005b-fd43-4bc8-8431-cc73b60a63fd> | 2.671875 | 765 | News Article | Science & Tech. | 41.936471 | 3,962 |
Department of Physics Faculty Present: Cosmology, The Accelerating Expansion of the Universe and Cosmology, The Science of the Whole Universe
Cosmology is the study of the universe. If you are interested in the vast universe in which we reside, you won't want to miss these public lectures!
Cosmology: Accelerated Expans... | <urn:uuid:0365d531-3115-4768-8f65-d704b89a4981> | 2.609375 | 497 | Content Listing | Science & Tech. | 34.965731 | 3,963 |
Satellites don't take videos; they capture still images. But in a new mosaic, 56 stills have been stitched together to present a seamless video flyover of what LDCM saw one day in April 2013. Read more
A field campaign called the Iowa Flood Studies (IFloodS) is taking place in eastern Iowa from May 1 to June 15, 2013. ... | <urn:uuid:5c9f31f7-755b-4e18-bcfc-7ba0c7164b43> | 2.90625 | 280 | Content Listing | Science & Tech. | 48.645758 | 3,964 |
Cosmic housecleaning? Building blocks of stellar systems go missing
Media Note: Pictures of the Crab Nebula used in this study are at Pictures taken for this study are available at ftp://ftp.astro.umn.edu/pub/users/gehrz/crab_press_release_images/.
What: Fine cosmic dust, building block of stellar systems, missing in C... | <urn:uuid:d887ba24-6753-4bc9-b3e7-acff0e9f17a6> | 3.03125 | 1,252 | News (Org.) | Science & Tech. | 49.508362 | 3,965 |
Stanley Miller performed some of the most famous origin of life experiments, showing that the chemicals thought to be present in the early Earth's atmosphere might react to form amino acids, the building blocks of proteins. But these experiments haven't aged well, through no fault of their own; other scientists have si... | <urn:uuid:88050c85-9807-409a-818c-69af3f8de3f2> | 4 | 779 | News Article | Science & Tech. | 31.01756 | 3,966 |
Remember the warning to beware of yellow snow? Well, what’s true in your backyard is true on a much larger scale too. (For those from warmer climates, yellow-tinted snow is a sign that a dog or other animal has recently “paid a visit.”)
Snow at Earth’s north and south poles can also be tainted. Certain molecules — ones... | <urn:uuid:4ad7d888-637a-463e-8caf-3bc1366a6ccc> | 3.828125 | 396 | Personal Blog | Science & Tech. | 43.756192 | 3,967 |
The neutron bomb is an incredibly strange weapon. From the profile:
Cohen came up with a design for a warhead about one-tenth as powerful as the atomic bombs dropped on Japan. If it was detonated at 3,000 feet above ground level, its blast effects would be negligible while its neutron radiation would be powerful enough... | <urn:uuid:305554ac-8b5f-4528-a082-777369ae401f> | 2.625 | 448 | Personal Blog | Science & Tech. | 48.458068 | 3,968 |
java.io.IOException: error=12, Cannot allocate memory
While working on an embedded system with tight memory constraints, I discovered an inefficiency with the way Java executes processes. For this embedded system, it was sometimes necessary to execute bash scripts, which can be done by using Java’s ProcessBuilder. In g... | <urn:uuid:08f11bd8-0ea5-418a-af77-91675b5591fc> | 2.953125 | 1,554 | Personal Blog | Software Dev. | 57.466184 | 3,969 |
|HydroClim Minnesota - November 2002
A monthly electronic newsletter summarizing Minnesota climate conditions and the
resulting impact on water resources.
Distributed on the Wednesday following the first Monday of each month.
State Climatology Office - DNR Waters
WHAT HAS HAPPENED
- October precipitation totals were we... | <urn:uuid:30bafa1b-be54-42b4-a842-07498a3ac18e> | 2.71875 | 1,567 | Knowledge Article | Science & Tech. | 33.325634 | 3,970 |
What happens to the delicate larvae of ocean creatures when they’re exposed to increasing acid levels in the ocean? That’s the question marine biologists Steve Palumbi of Stanford and Eric Sanford of UC Davis are trying to answer through experiments with sea urchin larvae off the California and Oregon coasts.
Their the... | <urn:uuid:e21635b5-85d7-4cb0-8c60-95ada76d685b> | 3.6875 | 198 | Truncated | Science & Tech. | 49.787007 | 3,971 |
Mimer SQL Database Objects
This chapter provides a general introduction to the basic concepts of Mimer SQL databases and Mimer SQL objects.
Mimer SQL is a relational database system. This means that the information in the database is presented to the user in the form of tables. The tables represent a logical descriptio... | <urn:uuid:47ca3bd0-2d99-426f-b514-ba8b1cc0337e> | 3.25 | 480 | Documentation | Software Dev. | 31.500197 | 3,972 |
The waters of the Dead Sea, a landlocked lake between Israel and Jordan, are the saltiest on Earth, inhospitable to all but a few hardy species of bacteria and one species of alga. How do these microbes survive? Researchers in Israel and the United States have now found the secret of at least one of them. Haloarcula ma... | <urn:uuid:94e1e052-aac4-4844-aa29-90f4430c2a76> | 3.90625 | 442 | Knowledge Article | Science & Tech. | 34.036641 | 3,973 |
Ana and TD 3 take aim at the Lesser Antilles
Tropical Storm Ana was born this morning, when the remnants of Tropical Depression Two made a comeback and organized into the first tropical storm of the 2009 Atlantic hurricane season. Ana is the latest first named storm of the season since Hurricane Andrew got its name on ... | <urn:uuid:5d18f266-fae5-4315-bec6-3542d9b9acaa> | 2.546875 | 1,018 | Personal Blog | Science & Tech. | 56.197599 | 3,974 |
On this third day of our research project in the Mojave Desert, we did a series of tests on the biological soil crusts and soil samples we collected yesterday at three sites along Kelbaker Road near Baker, CA.
The laboratory building at the Desert Research Station is set up with standard equipment for chemical and biol... | <urn:uuid:20d815a6-e920-48f9-a99a-93b147836454> | 2.984375 | 879 | Personal Blog | Science & Tech. | 46.993131 | 3,975 |
Tropical cyclones will cause $109 billion in damages by 2100, according to Yale and MIT researchers in a paper published in Nature Climate Change.
That figure represents an increased vulnerability from population and especially economic growth, as well as the effects of climate change. Greater vulnerability to cyclones... | <urn:uuid:632e9181-9cc0-44f6-9fb5-d80c1f5f8807> | 3.625 | 699 | News Article | Science & Tech. | 35.521043 | 3,976 |
Comprehensive DescriptionRead full entry
BiologyInhabits open waters of lakes and medium to large rivers. Forms large aggregations in backwaters and other still waters during winter. Adults occur in shoals near the surface. Larvae live in littoral zone of rivers and lakes while juveniles leave shores and occupy a pelag... | <urn:uuid:c2dfee77-f255-4d44-9a49-fb82780ecf92> | 3.140625 | 218 | Knowledge Article | Science & Tech. | 47.609019 | 3,977 |
Foody, G. M., Palubinskas, G., Lucas, R.M., Curran, P. and Honzak, M., 1996. Identifying terrestrial carbon sinks: classification of successional stages in regenerating tropical forest from Landsat TM data. Remote Sensing of Environment, 55 (3), pp. 205-216.
Full text not available from this repository.
Official URL: h... | <urn:uuid:ff3cdc86-6cdf-4e44-b0da-d6f87b5703bf> | 2.671875 | 521 | Academic Writing | Science & Tech. | 38.215974 | 3,978 |
See also the
Dr. Math FAQ:
0.9999 = 1
0 to 0 power
n to 0 power
0! = 1
dividing by 0
Browse High School Number Theory
Stars indicate particularly interesting answers or
good places to begin browsing.
Selected answers to common questions:
Infinite number of primes?
Testing for primality.
What is 'mod'?
- Percentages of ... | <urn:uuid:07ad1d7c-316b-4175-b933-3229a4af6ac7> | 2.71875 | 1,727 | Q&A Forum | Science & Tech. | 87.323337 | 3,979 |
(Wikimedia Commons Image)
Each year, scientists discover an average of 15,000 new species, usually ones that are highly endangered. But can this trend of discovery continue, and are we reaching a limit on how many species actually exist in the world?
Researchers have documented more than 1.2 million species. A paper pu... | <urn:uuid:e096790f-297c-4964-8ad1-ce849f88bb47> | 3.53125 | 407 | News Article | Science & Tech. | 43.068383 | 3,980 |
Wonder how the Spanish dancer, or Hexabranchus sanguineus, got its common name? When it swims, the frilled edges of its mantle resemble the color and movement of the skirts of a flamenco dancer.
When they're not swimming, Spanish dancers crawl along relatively flat surfaces with the edges of their mantle tucked up clos... | <urn:uuid:d3ca5afe-b66f-400d-ba60-aa22e2afd09c> | 3.3125 | 1,302 | Personal Blog | Science & Tech. | 56.718232 | 3,981 |
The Mach Principle and the Origin of Inertia From General Relativity
ANew Conformal Theory of Semi-Classical Quantum General Relativity
QUANTUM MECHANICS FROM GENERAL RELATIVITY:
P. Gibbs - Covariant Energy Momentum Conservation in General Relativity with Cosmological Constant
The Meaning of Relativiety, with new intro... | <urn:uuid:b2e00893-1a68-4ebd-bafd-a5fa36f59250> | 2.65625 | 411 | Content Listing | Science & Tech. | 24.383 | 3,982 |
How could a colorblind animal know how to change its skin color to blend into its surroundings? And what will the animal's predator "see," looking at its prey before and after it hides?
These provocative questions are addressed in article published today by a collaborative team from the Marine Biological Laboratory (MB... | <urn:uuid:a5864d1a-3c5b-4a30-9559-4298f554c9af> | 3.703125 | 1,171 | News Article | Science & Tech. | 32.369782 | 3,983 |
Scientists have developed and implanted into a living insect the False Death's Head Cockroach a miniature fuel cell that converts naturally occurring sugar in the insect and oxygen from the air into electricity. They term it an advance toward a source of electricity that could, in principle, be collected, stored and us... | <urn:uuid:c17ea5f7-29b9-4b47-b1f4-6b2746d7e301> | 3.296875 | 516 | News Article | Science & Tech. | 32.415823 | 3,984 |
Null Hypothesis Testing with Pearson's r
When to Use
This is straightforward. Do this when you have a sample value of Pearson’s r and you want to test the null hypothesis that the value of r in the population is zero. For example, imagine that each of 50 subjects judges the intelligence level of a stimulus person on a ... | <urn:uuid:37ea1b80-17b4-4caf-b458-d9987c3fe34e> | 4 | 659 | Documentation | Science & Tech. | 72.433404 | 3,985 |
|IODP publications Expeditions Apply to sail Sample requests Site survey data Search|
Backstripping is a proven method for extracting amplitudes of global sea level from passive margin records (e.g., Watts and Steckler, 1979). One-dimensional backstripping is a technique that progressively removes the effects of sedime... | <urn:uuid:3aee58fa-a54c-4bf1-be5d-98922731a658> | 3.078125 | 1,738 | Academic Writing | Science & Tech. | 35.48036 | 3,986 |
This huge cloud of dust and gas is the orion Nebula. Inside it stars are forming. About 4,600 million years ago the sun and the planets were forming inside a nebula like this.
Most of the scientists believe that the sun and the other planets are formed about 4,600 million years ago from a huge cloud of tiny, solid part... | <urn:uuid:ca7f2bb5-174a-4f4e-a1da-68ff9de58603> | 4 | 273 | Knowledge Article | Science & Tech. | 56.611782 | 3,987 |
Drew Harvell is associate director for environment at the Atkinson Center for a Sustainable Future at Cornell University. She is studying the health of coral reefs and marine ecosystems in Indonesia, and is helping to plan a new project, Capturing Coral Reef Ecosystem Services, financed by the Global Environmental Fund... | <urn:uuid:dfb9c88e-a7a4-4e50-8b56-82ba9c84e2d8> | 2.53125 | 2,286 | Personal Blog | Science & Tech. | 37.184177 | 3,988 |
Why CSS Frameworks?
CSS frameworks or libraries are intended to solve the same problems as any programming library - to make certain tasks easier, and to standardise repetitive work. They grew from various front end developers realising they were doing the same cross browser resets and layout setups over and over again... | <urn:uuid:5eb64b77-cb0a-4424-8c40-89bed3448feb> | 2.640625 | 3,556 | Personal Blog | Software Dev. | 51.895325 | 3,989 |
According to data released by NOAA, March was the 10th warmest globally on record. Here are the NOAA data and report. NASA also released their suite of graphics, but their surface temperature data page is down today, so I cannot relay how NASA’s March temperature compares to historical Marches. Once their site is back ... | <urn:uuid:7a6f32a4-1f51-4b4b-a8b7-fc7802272931> | 3.140625 | 1,936 | Personal Blog | Science & Tech. | 45.914195 | 3,990 |
CIA to capture iris recognition at a distance
The U.S. Central Intelligence Agency is developing technology that will be able to identify people from their iris - even while they are moving at a distance.
Andrew Kirby, senior physical scientist at CIA's Intelligence Technology and Innovation Centre told a Centre for St... | <urn:uuid:2a479e95-e3eb-4ead-9e3a-eda4594e8287> | 2.671875 | 711 | News Article | Science & Tech. | 37.762608 | 3,991 |
Microscopically small and usually just a single cell, protists are complex, varied organisms that represent more than 30 different phyla (the bulk of eukaryotic diversity on Earth). Some are photosynthetic, some are important pathogens, and their modes of locomotion vary.
These glass models allow the naked eye to see t... | <urn:uuid:0e555e47-c77f-456c-9044-ee540af396d3> | 3.3125 | 115 | Knowledge Article | Science & Tech. | 37.525 | 3,992 |
SAVING THE SAND MOUNTAIN BLUE BUTTERFLY
Sand Mountain blue butterflies live in only one place on Earth — within and near the dunes of “Singing” Sand Mountain in Nevada. But over the past three decades, extensive off-road vehicle use on these public lands managed by the Bureau of Land Management has destroyed more than ... | <urn:uuid:5d3dc9c2-c5f5-4f44-802e-07a862657863> | 3.0625 | 364 | Knowledge Article | Science & Tech. | 33.046944 | 3,993 |
Posted: May 16th, 2013 | Author: M.Aaron Silverman | Filed under: Applied Science, Genetics | Tags: Gene Therapy, Genetic Engineering, Stem Cells, Therapeutic Cloning | No Comments »
Scientists have made a long-awaited breakthrough in human cloning, by using human skin cells to create early-stage embryos. The breakthro... | <urn:uuid:ccc4d129-d060-415d-9dc3-290f2be87a53> | 2.65625 | 1,833 | Content Listing | Science & Tech. | 20.506677 | 3,994 |
The image above shows the nucleus of Halley's Comet --an orbiting iceberg visible from Earth every 75 years. Stephen Hawking believes that one of the major factors in the possible scarcity of intelligent life in our galaxy is the high probability of an asteroid or comet colliding with inhabited planets. Through Earth's... | <urn:uuid:b6df074f-f526-41ef-8f98-2ef5077b45a7> | 3.953125 | 1,400 | News Article | Science & Tech. | 30.600467 | 3,995 |
development of CO2 emissions
Whilst Eastern Europe/Eurasia`s emissions of CO2 will increase by 43% between 2009 and 2050 under the Reference scenario, under the Energy [R]evolution scenario they will decrease from 2,483 million tonnes in 2009 to 243 million tonnes in 2050. Annual per capita emissions will drop from 7.3... | <urn:uuid:79a61f80-c10e-4545-9296-cd167b4f0669> | 2.78125 | 171 | Knowledge Article | Science & Tech. | 57.883004 | 3,996 |
Sharks roamed the oceans before dinosaurs walked the land. They even survived the Permian mass extinction 252 million years ago, when over 90% of all species died off. Today, however, these top predators are disappearing from our oceans. They are in trouble on the Great Barrier Reef, have almost been eliminated from th... | <urn:uuid:e3930070-b1a0-4f91-9ae6-0ef04e6a252a> | 3.625 | 758 | Knowledge Article | Science & Tech. | 49.150598 | 3,997 |
Bubbling sea signals severe coral damage this century
Richard Black Environment correspondent, BBC News
Carbon dioxide bubbles into the water from the slopes of a dormant volcano here, making it slightly more acidic.
Coral is badly affected, not growing at all in the most CO2-rich zone.
Writing in journal Nature Climat... | <urn:uuid:daf412f5-8e93-47ed-8e03-e85f18a81358> | 3.703125 | 984 | News Article | Science & Tech. | 49.497538 | 3,998 |
February 28, 2007
GCRIO Program Overview
Our extensive collection of documents.
Archives of the
Global Climate Change Digest
A Guide to Information on Greenhouse Gases and Ozone Depletion
Published July 1988 through June 1999
FROM VOLUME 7, NUMBER 3, MARCH 1994
- OF GENERAL INTEREST: OZONE DEPLETION
Protection of the O... | <urn:uuid:cad74500-739c-4b26-9efb-8b7a1b31324c> | 3.0625 | 481 | Content Listing | Science & Tech. | 44.774422 | 3,999 |