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Why Mars again?
The big unknown remains. Scientists want to know if any form of life ever existed there, and that means microscopic organisms. Since the 1960s, spacecraft have zipped past, orbited or landed on Mars in this quest. Two small NASA rovers that arrived in 2004 explored different craters and one is still fun... | <urn:uuid:ca8aa5f9-4d8c-4aa5-9f7e-51003e87bc7a> | 3.546875 | 383 | Knowledge Article | Science & Tech. | 59.522205 |
The Saturn family of rockets were the first dedicated space
rockets of the United States. All previous rockets used were adapted
from military designs. Rockets such as the Atlas and Titan were
primarily designed as InterContinental Ballistic Missiles (ICBMs),
with the payload being nuclear missiles. This generally work... | <urn:uuid:850db5ca-b324-46c1-8ca2-e16b9dd9afb8> | 3.78125 | 782 | Knowledge Article | Science & Tech. | 50.380962 |
Since a file is a unit of storage and it stores information, it has a size, which is the number of bits it contains. To manage it, a file also has a location, also called a path that specifies where and/or how the file can be retrieved. Also, for better management, a file has attributes that indicate what can be done o... | <urn:uuid:a6b0deef-705e-48b6-9960-5225171810f9> | 4.15625 | 1,662 | Documentation | Software Dev. | 54.579266 |
A piece in Asimov’s Science Fiction this month argues just this point. Reflections: The Death of Gallium makes the case that we’re quickly running out of a few rare elements whose existence makes modern electronic innovations possible.
The problem is one of basic chemistry.
The elements are the basic building blocks of... | <urn:uuid:d56ab674-6d13-4596-96e7-64775e8303c9> | 3.609375 | 304 | Personal Blog | Science & Tech. | 46.961298 |
What is encoding
What is character encoding, and why should I care?
First, why should I care?
If you use anything other than the most basic letters and numbers of the English alphabet, people may not be able to read your text unless you say what character encoding you used.
For example, you may intend the text to look ... | <urn:uuid:096b4c61-9fe8-4412-ae64-c2cb057a8a36> | 4.46875 | 1,209 | Knowledge Article | Software Dev. | 49.988209 |
serialize(attr_name, class_name = Object)public
Specifies that the attribute by the name of attr_name should be serialized before saving to the database and unserialized after loading from the database. The serialization is done through YAML. If class_name is specified, the serialized object must be of that class on re... | <urn:uuid:1518627d-fcfc-45d1-bdbc-3f5615a68ed8> | 2.890625 | 251 | Documentation | Software Dev. | 34.003017 |
SBDART: A Practical Tool for Plane-Parallel Radiative Transfer in the Earth's Atmosphere
Entry ID: USCB_SBDART
SBDART (Santa Barbara DISORT Atmospheric Radiative Transfer) is a FORTRAN computer code designed for the analysis of a wide variety of radiative transfer problems encountered in satellite remote sensing and at... | <urn:uuid:0ad94154-430a-48cb-867f-02c5b690a99f> | 2.78125 | 2,635 | Knowledge Article | Science & Tech. | 46.501591 |
Related page: significant vernal pools
Photo courtesy of Woodlot Alternatives, Inc.
Vernal pools or "spring pools" are shallow depressions that usually contain water for only part of the year. In the Northeast, vernal pools may fill during the fall and winter as the water table rises. Rain and melting snow also contrib... | <urn:uuid:bb185547-fe42-40a8-adc0-ee9a40fd0ad6> | 3.65625 | 369 | Knowledge Article | Science & Tech. | 41.647 |
A team of physicists have curbed the hope that quantum physics might be squared with common sense. At least if we want to hang on to Einstein's highly respected theory of relativity. Their result concerns what Einstein called "spooky action at a distance" and it may soon be possible to test their prediction in the lab.... | <urn:uuid:958bbd1f-800b-4db9-a0ec-b1d6c116c3d9> | 3.171875 | 363 | Content Listing | Science & Tech. | 38.63101 |
As an artist and a programmer I look to identify three principle aspects when I am observing recursion or considering the concept in use,
identify a rule which has self-reference (in programming an example is a named function containing the same named function),
producing a process of repetition with the requirement of... | <urn:uuid:9c214174-be32-4ffe-b00c-1c5b5462aad7> | 3.28125 | 517 | Q&A Forum | Software Dev. | 44.578357 |
Genus: Cells are equal in size (Illustrations of The Japanese Fresh-water Algae, 1977).
Planktonic; colony within a gelatinous sheath; cell body spherical, elliptical or pear-shaped; 4 daughter cells
attached to a filament dichotomously radiating from the center of the colony;
a single chloroplast cup-shaped, with a py... | <urn:uuid:766b7df1-69d3-47da-98fc-7f5ebebc3c3b> | 2.765625 | 128 | Knowledge Article | Science & Tech. | 26.256685 |
hi, jndi is an api which provides a connection object to the programmer . by using jndi we can get the connection and the connection and given to the server. actually server maintain a connections which will call it a connectionpooling mechnisam. this type connection use jdbc to access the connection. we no need to wri... | <urn:uuid:169fbc52-3899-4905-af2f-ca73cef71bd4> | 2.859375 | 279 | Q&A Forum | Software Dev. | 40.226059 |
The main thing that distinguishes spiders from the rest of the animal kingdom is their ability to spin silk, an extremely strong fiber. A few insects produce similar material (silkworms, for example), but nothing comes close to the spinning capabilities of spiders. Most species build their entire lives around this uniq... | <urn:uuid:4503d201-3d62-419c-b3bb-3eabee844c14> | 4.34375 | 536 | Knowledge Article | Science & Tech. | 45.855746 |
Nov. 7, 2012
Scientists and sky watchers are converging on the northeast coast of Australia, near the Great Barrier Reef, for a total eclipse of the sun on Nov. 13/14. For researchers, the brief minutes of totality open a window into some of the deepest mysteries of solar physics.
Oct. 31, 2012
New results from NASA's ... | <urn:uuid:b64d991b-69a5-4879-8892-30707a9f6007> | 3.0625 | 415 | Content Listing | Science & Tech. | 66.945348 |
Dwindling food supplies, caused by climate change, are threatening two species of penguin. Adélie and chinstrap penguins are both suffering thanks to falling availability of tiny shrimp-like crustaceans called krill that they eat. This is contrary to previous predictions, explained George Watters, director of the US Na... | <urn:uuid:d701b9c7-e48d-4fd6-9021-595c277c75f0> | 3.46875 | 1,060 | Personal Blog | Science & Tech. | 38.600341 |
palladium (Pd)Article Free Pass
palladium (Pd), chemical element, least dense and lowest-melting of the platinum metals of Groups 8–10 (VIIIb), Periods 5 and 6, of the periodic table, used especially as a catalyst (a substance that speeds up chemical reactions without changing their products) and in alloys. A precious,... | <urn:uuid:652d8672-c616-4511-932d-fa878d0d33d3> | 3.609375 | 989 | Knowledge Article | Science & Tech. | 38.606435 |
The Free Fall model allows the user to examine the motion of an object in freefall. This is simply one-dimensional motion (vertical motion) under the influence of gravity.
The Free Fall model was created using the Easy Java Simulations (EJS) modeling tool. It is distributed as a ready-to-run (compiled) Java archive. Do... | <urn:uuid:ddf3557a-2db8-44d9-826e-081ee125c43e> | 3.734375 | 619 | Knowledge Article | Science & Tech. | 56.835209 |
5.23.2 Object-Oriented Terminology
This section is mainly for reference, so you don't have to understand
all of it right away. The terminology is mainly Smalltalk-inspired. In
- a data structure definition with some extras.
- an instance of the data structure described by the class definition.
- instance variables
- fi... | <urn:uuid:9a3510ae-be46-4fc5-84c3-a18baf8064ed> | 3.625 | 354 | Documentation | Software Dev. | 44.143997 |
[Haskell-cafe] Why 'round' does not just round numbers ?
ok at cs.otago.ac.nz
Mon Oct 27 21:44:17 EDT 2008
On 27 Oct 2008, at 11:00 pm, Henning Thielemann wrote:
> On Mon, 27 Oct 2008, L.Guo wrote:
>> I think this is unresonable. then try it in GHC 6.8.3.
>> Prelude> round 3.5
>> Prelude> round 2.5
>> Is there any expl... | <urn:uuid:3338e304-edd0-44ab-93d9-384b6b2068d6> | 3.09375 | 304 | Comment Section | Software Dev. | 88.562193 |
When you think of Sir Isaac Newton, you might imagine a man sitting under an apple tree. It is said that Newton discovered gravity when an apple fell on his head and he wondered what made the apple fall down instead of float away or go up. In 1687, Newton published a book with his explanation of how an object, or matte... | <urn:uuid:cb23068f-17cd-4b49-b5b3-5f86810b5ab7> | 3.78125 | 350 | Knowledge Article | Science & Tech. | 56.447103 |
THE first "doubly magic" nickel nuclei have popped into existence in France. The nuclei can be used to test competing theories of nuclear forces and even set the stage for detecting a new form of radioactivity.
Light atoms tend to break apart when there is an imbalance in the numbers of protons and neutrons. But half a... | <urn:uuid:848d6c9c-b735-4700-b5fa-b27f5874a215> | 3.59375 | 224 | Truncated | Science & Tech. | 48.279429 |
Name: Rithy Ngy
Before the discovery of radioactivity, how did scientists
estimate the age of rock layers?
Thanks for your question.
Before the discovery of radioactivity scientists determined the relative
age of fossils by looking at where they were found in the rock layers. The
idea was that deeper rocks must be olde... | <urn:uuid:afc9b34a-41c4-4e35-a314-d9aa6d6e01bd> | 3.828125 | 325 | Q&A Forum | Science & Tech. | 46.653223 |
A number written
in the place-value notation with base 10. For example 5.321
The method of
positional notation used in real number system. A real number can
be either rational or irrational. A rational number can be written
as a terminating decimal or repeating decimal number. For example,
3/4 = 0.75 is a terminating d... | <urn:uuid:ee7da8bf-4681-4057-8923-0305821bf692> | 3.84375 | 611 | Structured Data | Science & Tech. | 51.754738 |
Search our database of handpicked sites
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Will we grow babies outside their mothers' bodies?
By Gretchen Reynolds
Posted 08.01.2005 at 2:00 pm 8 Comments
A fetus lives in a world of bubbles. In its earliest days, it’s shaped like one. Later, it floats in one-the squishy, enveloping amniotic sac. And eventually, if all goes well, the fetus releases one bubble o... | <urn:uuid:06b344e6-4d88-4811-9649-90ba0ec404ac> | 2.71875 | 192 | Content Listing | Science & Tech. | 67.433808 |
TNRTB Archive - Retained for reference information
A team of European and American conservation biologists has developed the most powerful and comprehensive field evidence to date for a major tenet of RTB’s speciation model. RTB’s model posits that large-body-sized species manifest a high probability for rapid extincti... | <urn:uuid:adc6c019-8b59-4fea-aba9-39c7101119ae> | 3.4375 | 280 | Truncated | Science & Tech. | 30.295023 |
Posts Tagged ‘Climate Change’
Brief Description of Global Warming.
Global warming is the increase of average temperature in the Earth, as result of greenhouse gas (GHG) effect.
How greenhouse effect occurs:
About 30 percent of the sunlight that beams toward Earth is deflected by the outer atmosphere and scattered back ... | <urn:uuid:80fddeab-363c-4f92-a205-3cabbcec937a> | 2.953125 | 697 | Knowledge Article | Science & Tech. | 25.232845 |
Through photosynthesis, plants use carbon dioxide to make oxygen and help regulate the amount of both gases in the atmosphere. Since plants grow faster and use more carbon dioxide when carbon dioxide levels are high, some people believe that plants can absorb much of the excess carbon dioxide produced by burning fossil... | <urn:uuid:f8b637c4-7bc6-435b-8850-f9834f748bf6> | 3.734375 | 144 | Knowledge Article | Science & Tech. | 35.471818 |
After reporting a few months ago on the rise of carbon dioxide in the atmosphere, I got e-mails from readers asking where they could find more information about the basics of climate science. My interlocutors even included climate-change contrarians who seemed open to the possibility that they might be wrong. I found m... | <urn:uuid:729b4648-bcba-4468-b2c9-de201776e01b> | 2.75 | 1,014 | Personal Blog | Science & Tech. | 43.456106 |
To achieve interstellar travel, the Kline Directive instructs us to be bold, to explore what others have not, to seek what others will not, to change what others dare not. To extend the boundaries of our knowledge, to advocate new methods, techniques and research, to sponsor change not status quo, on 5 fronts:
1. Legal... | <urn:uuid:9f195b83-ebb0-4814-80c6-22859ae3f8fb> | 3.28125 | 690 | Personal Blog | Science & Tech. | 30.453079 |
Probably the most frequent means of drawing a right triangle is when the length of the sides of the right triangle have been calculated, and those dimensions are used to lay out the triangle.
For instance, you know a 45° right triangle with a leg length of 4" is needed. You also know that the legs of a 45° right triang... | <urn:uuid:455bd1e5-bd8e-40c9-b7c6-57ac07040c36> | 4 | 512 | Tutorial | Science & Tech. | 74.261817 |
Loss of genetic diversity and fitness in Common Toad (Bufo bufo) populations isolated by inimical habitat
Article first published online: 23 NOV 2002
Journal of Evolutionary Biology
Volume 11, Issue 3, pages 269–283, May 1998
How to Cite
Hitchings, S. P. and Beebee, T. J. C. (1998), Loss of genetic diversity and fitnes... | <urn:uuid:f933dfa6-6498-456f-a427-0ece0e029c4c> | 2.859375 | 498 | Academic Writing | Science & Tech. | 28.278754 |
Cliff, on the other hand, remains on the Earth. When Biff returns, it turns out that Cliff is 95 years old.
What Happened?According to relativity, two frames of reference that move differently from each other experience time differently, a process known as time dilation. Because Biff was moving so rapidly, time was in ... | <urn:uuid:7379c742-de24-4d32-b0e2-3656370f782c> | 3.140625 | 723 | Knowledge Article | Science & Tech. | 51.491514 |
One can often hear that OOP naturally corresponds to the way people think about the world. But I would strongly disagree with this statement: We (or at least I) conceptualize the world in terms of relationships between things we encounter, but the focus of OOP is designing individual classes and their hierarchies.
Note... | <urn:uuid:9822a1e5-3810-47cb-b308-bfc666ee4152> | 2.9375 | 562 | Q&A Forum | Software Dev. | 48.46761 |
Rotifer, a microscopic animal. There are approximately 2,000 species. Most species live in freshwater; some live in the sea; and a few live as parasites in or on other organisms. A rotifer's body consists of a head, a long middle section that holds the internal organs, and a tailpiece bearing one to four pointed projec... | <urn:uuid:14575739-a366-4678-8fd8-fd2a14e95f26> | 3.859375 | 299 | Knowledge Article | Science & Tech. | 47.513176 |
Description: The Carpenter Frog is
a mid-sized frog, ranging from 1 ? -2 ? in (4.1-6.7 cm). It is generally brown
or bronze in color with 4 light stripes down its back, and no dorsolateral
ridges. Carpenter Frogs have short hind legs, making them somewhat
toad-like in body shape and a venter that is white with black mo... | <urn:uuid:f4a7e44f-effd-4d1c-8bcc-2675b7745276> | 3.296875 | 359 | Knowledge Article | Science & Tech. | 56.852045 |
Today, let's do calculus. The University of
Houston's College of Engineering presents this
series about the machines that make our
civilization run, and the people whose ingenuity
Math is an odd business.
Anyone who's literate knows arithmetic. Anyone with
a high school education has been exposed to some
algebra. Almos... | <urn:uuid:12682f5e-5d89-4bc5-a85c-7625d66fbdf5> | 3.4375 | 894 | Audio Transcript | Science & Tech. | 59.624917 |
Science Fair Project Encyclopedia
In physical geography, tundra is an area where tree growth is hindered by low temperatures and short growing seasons. The term "tundra" comes from the Sami language (through Russian), meaning treeless plain.
- Desert - tree growth hindered by low rainfall
- Heath, Pasture - tree growth... | <urn:uuid:6771927b-dadd-4524-8348-c267543eb438> | 3.84375 | 1,462 | Knowledge Article | Science & Tech. | 23.907384 |
|Ediacara Biota: Ancestors of Modern Life or Evolutionary Dead End?|
Ediacara Biota are the first convincing fossils of Precambrian animals that were found in the Ediacara Hills of Australia. The unusual fossils, originally interpreted as jellyfish, strange worms, and frond-like corals, gave scientists their first look... | <urn:uuid:fdc256ea-068e-4916-9906-b8f7ceaf2f9c> | 3.609375 | 251 | Content Listing | Science & Tech. | 26.072025 |
When do Solar and Lunar eclipses occur?
The German Aerospace Center (Deutsches Zentrum für Luft- und Raumfahrt) is participating in the International Year of Astronomy 2009. DLR experts will be answering the 'Astronomy Question of the Week' once a week.
Course of the solar eclipse zones of Saros family 136
The new cent... | <urn:uuid:1d3a9357-9e5c-4333-b970-288a9c294a69> | 3.859375 | 693 | Knowledge Article | Science & Tech. | 46.367576 |
Staged CI is a practice where a tight loop is used for the typical CI build and one or more additional loops are used to automate a more thorough determination of the code quality. The reason for the multiple loops is that you want to keep the CI loop tight to provide feedback to developers as quickly as possible. In t... | <urn:uuid:62607504-eaaf-4ddb-82bf-768e11ea2e1c> | 2.765625 | 1,226 | Knowledge Article | Software Dev. | 52.880427 |
If n is an integer, the numbers coprime to n, taken modulo n, form a group with multiplication as operation; it is written as (Z/nZ)× or Zn*. This group is cyclic if and only if n is equal to 2 or 4 or pk or 2 pk for an odd prime number p and k ≥ 1. A generator of this cyclic group, that is, all powers of some number g... | <urn:uuid:cd0c90aa-f1e7-4c89-ac04-18877e57b3b9> | 3.203125 | 469 | Knowledge Article | Science & Tech. | 77.565183 |
The world’s oceans may be turning acidic faster today from human carbon emissions than they did during four major extinctions in the last 300 million years, when natural pulses of carbon sent global temperatures soaring, says a new study in Science. The study is the first of its kind to survey the geologic record for e... | <urn:uuid:87a93661-2527-4e96-ae5a-40f25ef80448> | 3.109375 | 203 | Content Listing | Science & Tech. | 41.584295 |
In the section Introduction to programming, we had defined an expression as “A mathematical entity that evaluates to a value”. However, the term mathematical entity is somewhat vague. More precisely, an expression is a combination of literals, variables, operators, and functions that evaluates to a value.
A literal is ... | <urn:uuid:7ec9e048-c3a5-45c9-ac25-99d1589d08ef> | 5.03125 | 543 | Tutorial | Software Dev. | 50.778458 |
The Earth's Elements; October 1994; Scientific American Magazine; by Kirshner; 8 Page(s)
Matter in the universe was born in violence. Hydrogen and helium emerged from the intense heat of the big bang some 15 billion years ago. More elaborate atoms of carbon, oxygen, calcium and iron, out of which we are made, had their... | <urn:uuid:1c2f8a66-9e2f-49cd-bf9f-c6b9da20b334> | 3.59375 | 236 | Truncated | Science & Tech. | 35.379822 |
Observations and results
How much water were you able to collect? You can try leaving it for longer and see how much more you can accumulate.
Not everything can be separated out from water this way. Tiny particles, such as dust or chemical pollutants, can still find their way up into the sky. In fact, raindrops form ar... | <urn:uuid:4d924797-1418-4976-b395-22efd897cf34> | 3.75 | 297 | Tutorial | Science & Tech. | 51.097739 |
- Philipp Böing
- United Kingdom
UCL iGEM / SynBioSoc organizer, student (computer science), University College London
Should Synthetic Organisms be released to clean plastic pollution from the ocean?
The Problem: Microplastic pollution in the ocean.
Proposed Solution: Engineered Organisms that can collect the pollutio... | <urn:uuid:4732d972-9ef0-4721-a2eb-e7cfd8112cb8> | 3.046875 | 169 | Audio Transcript | Science & Tech. | 35.606003 |
Gamma-Ray Astronomy in the Compton
The STS 37 space shuttle launch which carried the Compton satellite into orbit. Compton, at 17 tons, is the largest scientific payload carried by the shuttle.
|A 14-year effort of scientific vision, careful instrument design, spacecraft engineering, and mission development culminated ... | <urn:uuid:546063f6-e0e5-417e-8814-322891fb9283> | 3.765625 | 342 | Knowledge Article | Science & Tech. | 20.434148 |
Pub. date: 2008 | Online Pub. Date: April 25, 2008 | DOI: 10.4135/9781412963893 | Print ISBN: 9781412958783 | Online ISBN: 9781412963893| Publisher:SAGE Publications, Inc.About this encyclopedia
Chamberlin, Thomas C. (1843–1928)
THOMAS C. CHAMBERLIN was an American glacial geologist and educator who, at the turn of the... | <urn:uuid:44932e6a-6c89-4b87-b361-5993aafbd0ba> | 3.625 | 282 | Knowledge Article | Science & Tech. | 47.512102 |
Help is needed with the following geometry problem:
Consider a triangle ABC. Insert a point D on the side Ac and a point E on the side AB. Draw a line through DE. The intersection between the line through DE and the line through BC is called F.
Drawing an arbitrary triangle as mentioned above we can compute the followi... | <urn:uuid:f765672a-410b-4353-9f7a-a2707ffcb8ba> | 3.109375 | 126 | Q&A Forum | Science & Tech. | 64.382739 |
If sin^2 of theta = 1/2 and pi< theta < 3pi/2 (quadrant III) then theta= ?
I have no idea how to do these type of problems! Please Help!
Follow Math Help Forum on Facebook and Google+
Originally Posted by askmemath sine of theta must be taken as negative sqaure root of half here.
then the value of theta will be 5Pi/4
V... | <urn:uuid:ac1235ec-ddd8-4d21-a463-2f722c04a8f7> | 2.859375 | 99 | Q&A Forum | Science & Tech. | 70.878409 |
Matter in Black Holes
Name: dutch minott
Date: 1993 - 1999
What happens to matter that is pulled in to black holes?
It passes through very severe gravitational forces
that can distort and pull it apart. Tim e seems to drag
while it passes through the surface. Sometimes a little bit
of x-rays or particles are emitted, b... | <urn:uuid:8e8db389-8a00-4497-906a-bb0c10b17905> | 3.171875 | 130 | Knowledge Article | Science & Tech. | 53.702763 |
Continuing the science blocks at East Bay Waldorf school, I am teaching physics for grade eight. Physics in the upper grades begins in grade six, and continues on as a sequence of advancing concepts through grade eight. In grade eight, the concepts covered are thermal dynamics, refraction, hydraulics, and electromagnet... | <urn:uuid:15d7444a-7c3b-43b8-96f7-3308a17704d7> | 2.96875 | 1,209 | Personal Blog | Science & Tech. | 44.929365 |
What is all this fuss about the Higgs boson?
The physics community is abuzz that a fundamental particle expected by the largely successful
Standard Model of particle physics may be soon be found by the huge
Large Hadron Collider (LHC) at
CERN in Europe.
The term boson refers to a type of fundamental particle with simil... | <urn:uuid:cdc3753a-c5f2-46d1-818a-1f9c61a0d24d> | 3.15625 | 191 | Content Listing | Science & Tech. | 30.1405 |
How do I convert a char password = new char; into a Sting String new_password.
return (String) password or new_password = (String)password
Joined: Jul 10, 2001
Hello This is taken directly from the String class String(char value) Allocates a new String so that it represents the sequence of characters currently containe... | <urn:uuid:3ede8e7f-fe61-4920-bf1f-16e2a1af3aaa> | 3.375 | 175 | Q&A Forum | Software Dev. | 51.526545 |
Joined: 16 Mar 2004
|Posted: Fri Dec 19, 2008 10:01 am Post subject: Magnets that could Burn Cancer Developed in Scots Laboratory
|Magnets that could Burn Cancer Developed in Scots Laboratory
Tiny magnets made by bacteria could be used to kill tumours, say researchers.
A team at the University of Edinburgh has develope... | <urn:uuid:0e328024-c9b3-40c4-a998-8e4a8cc90410> | 3.015625 | 546 | Comment Section | Science & Tech. | 41.61944 |
Surface Reflection and Polarization
Name: Tony K.
I was studying on polarization of light and came across
Brewster's angle. Even after much research on the Internet, I cannot
find out WHY polarization occurs parallel to the surface along this
angle. Why does it work? What is happening that my eyes cannot see?
Brewster'... | <urn:uuid:642b4e9d-8f1d-411b-8746-55a34f648bd1> | 3.421875 | 481 | Q&A Forum | Science & Tech. | 42.699564 |
How Much is a Species Worth?
That simple question is at the heart of a complicated debate over the value of saving endangered species and the controversial law that protects them
Jerry Adler and Mary Hager
It is one of the greatest laws in history--a compact with the Earth in which humanity for the first time renounces... | <urn:uuid:03bbec3f-1525-4665-bfb6-ef189dbbed26> | 3.578125 | 3,341 | Nonfiction Writing | Science & Tech. | 41.663772 |
Mechanics: Vectors and Projectiles
Vectors and Projectiles: Audio Guided Solution
Ty Ridlegs boards a paddle boat and heads the boat westward directly across a river. The river flows south at 48 cm/s. Ty paddles the boat with a speed of 98 cm/s.
a. Determine the resultant velocity of the boat - both magnitude and direc... | <urn:uuid:e258b6a7-da2c-4727-9b3d-afe6f6e7f540> | 4 | 363 | Tutorial | Science & Tech. | 69.005032 |
Science can make blind mice see again and deaf mice hear — now scent-deprived mice can sniff their surroundings and smell for the first time, after a new gene therapy. It may be a while before this treatment percolates up to humans, but it’s a sign that gene therapy could restore smell in this rare but disorder.
When M... | <urn:uuid:5e6dbb61-91b9-49d0-a2b1-f235b4f1cf8e> | 3.09375 | 267 | Content Listing | Science & Tech. | 40.450395 |
PhysicsThe word "Physics" is derived from the Greek Words "physikos" (= natural) and "physis" (= nature)
Study of PhysicsPhysics is a science that deals with the natural world. It studies about matter (the fundamental constitutent of the universe), in its various forms, the forces exerted by them on one another and the... | <urn:uuid:ff13712d-fbb8-49d3-aca5-b735c5ed10e9> | 3.203125 | 599 | Knowledge Article | Science & Tech. | 41.625701 |
NASA's Curiosity rover is really digging in at Rocknest, a patch of Martian sand the robot has been exploring for more than a week.
The photo above, from one of Curiosity's navigation cameras, shows an area of Rocknest sand "with what looks like three bite marks," as project scientist John Grotzinger put it in an Octob... | <urn:uuid:972cc973-8331-4abd-9486-600cd241c9de> | 3.046875 | 380 | Truncated | Science & Tech. | 31.976426 |
"What's Special About This Number" Facts
by Gianni A. Sarconehttp://www.archimedes-lab.org/numbers/Num1_69.html
eople have always been fascinated by NUMBERS... Numbers areactually basic elements of mathematics used for counting,measuring,ranking,comparing quantities, and solving equations.
Numbers have unique propertie... | <urn:uuid:49dc6a98-8090-431c-9547-d624e6dfd547> | 3.09375 | 456 | Content Listing | Science & Tech. | 24.268585 |
) is the most abundant gas in Earth's atmosphere, including the troposphere. This cartoon also depicts several other tropospheric gases, including oxygen (O2
), carbon dioxide (CO2
), water vapor (H2
O), methane (CH4
), sulfur dioxide (SO2
), and carbon monoxide (CO).
Click on image for full size
Image courtesy UCAR, m... | <urn:uuid:bbedeadc-6127-460e-aab1-5fb7f5466c30> | 3.75 | 656 | Knowledge Article | Science & Tech. | 41.898182 |
The pigbutt worm or flying buttocks (Chaetopterus pugaporcinus) is a newly discovered species of worm found by scientists at the Monterey Bay Aquarium Research Institute. The worm is round in shape, approximately the size of a hazelnut, and bears a strong resemblance to a disembodied pair of buttocks. Because of this, ... | <urn:uuid:ca41c474-4edc-49b5-a079-8fdd7700d351> | 3.859375 | 373 | Knowledge Article | Science & Tech. | 31.172075 |
The other day, an educated but non-professional person wrote something to me that said "All starfish eat mussels".
This was followed by me doing this:
Then...I regained my composure.
Okay..so let me say this again. NOT ALL STARFISH EAT MOLLUSKS!!
There seems that YEARS of biology and zoology textbooks using the common ... | <urn:uuid:ce8034a2-11e1-4cfb-8764-7919af74907f> | 2.71875 | 771 | Personal Blog | Science & Tech. | 64.375568 |
purpose of the PARCS project is to place an advanced laser-cooled cesium
atomic clock in orbit and
utilize it to test a variety of predictions of the Theory
of Relativity. One of these predictions, made by Albert
Einstein in 1915, is that clocks tick slower in strong gravity
than they do in weak gravity.
An orbiting sa... | <urn:uuid:aac94cf6-49da-453d-91b8-5c317ec1ce40> | 4.15625 | 811 | Knowledge Article | Science & Tech. | 34.244344 |
Linus Pauling: One day, when I was Eastman Professor at Oxford in the spring of 1948, I caught a cold. It was before the vitamin C days!
I caught a cold and after a day or two in bed of reading science fiction and detective stories, I got tired of that, and thought,
why don't I discover the alpha helix? Something like ... | <urn:uuid:df64510b-6c6f-491a-8d21-014cd0d4c248> | 2.859375 | 389 | Audio Transcript | Science & Tech. | 62.311731 |
Quadratic Equations and Parabolas
-> SOLUTION: 3x^2+12x+8=0
You enter your algebra equation or inequality -
solves it step-by-step while providing clear explanations. Free on-line demo
: algebra software solves algebra homework problems with step-by-step help!
solves your algebra problems and provides step-by-step expl... | <urn:uuid:51b4abe3-9f62-425e-bb8b-ccb17d98b3a6> | 3.1875 | 228 | Tutorial | Science & Tech. | 52.156046 |
Science Fair Project Encyclopedia
Eryops ("big eye") is a genus of extinct, semi-aquatic amphibian found primarily in the Permian-aged Admiral Formation of Archer County, Texas, but fossils are also found in New Mexico and parts of the eastern United States. Eryops averaged a little over 5 feet (1.5 m) long, making it ... | <urn:uuid:f318908e-b16e-42ff-a5c9-95dec929d43a> | 3.921875 | 1,307 | Knowledge Article | Science & Tech. | 43.667881 |
Elements, Atoms and the Periodic Table
atom - An atom is the smallest unit of a substance that still has all the properties of that substance. In most cases, an atom consists of protons, neutrons, and electrons. The protons and neutrons are found in the center of the atom, called the atomic nucleus, and the electrons o... | <urn:uuid:85db2682-a5c2-4d4b-bd99-d1ca6c279b20> | 4.40625 | 597 | Structured Data | Science & Tech. | 40.039332 |
If you love space, and you love getting behind the scenes access then, the AsteroidMappers project is perfect for you. NASA's Jet Propulsion Laboratory's spacecraft Dawn recently finished its orbit of the asteroid Vesta, and has delivered so much data that citizen scientists are being asked to help analyze what has bee... | <urn:uuid:0da9f057-79f2-40cb-8226-48dc3b3cc44c> | 3.21875 | 518 | Personal Blog | Science & Tech. | 37.229642 |
- Bulgarian (bg)
- Czech (cs)
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- German (de)
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- English (en)
- Spanish (es)
- Estonian (et)
- Finnish (fi)
- French (fr)
- Hungarian (hu)
- Icelandic (is)
- Italian (it)
- Lithuanian (lt)
- Latvian (lv)
- Maltese (mt)
- Dutch (nl)
- Norwegian (no)
- Polish (pl)
- Portuguese (pt)
- Romanian (ro)... | <urn:uuid:114a1a34-4fa6-47e8-8565-5e8a60233eea> | 2.75 | 942 | Content Listing | Science & Tech. | 25.740804 |
Section 1: Introduction
Any two objects, regardless of their composition, size, or distance apart, feel a force that attracts them toward one another. We know this force as gravity. The study of gravity has played a central role in the history of science from the 17th century, during which Galileo Galilei compared obje... | <urn:uuid:a5bbc16f-8701-4c2f-9f0b-3cc757a902a2> | 3.96875 | 394 | Knowledge Article | Science & Tech. | 26.841364 |
All sea turtles that occur in US waters are listed as either threatened or endangered under the Endangered Species Act of 1973, as amended. Maintaining an active stranding network has been identified in each of the sea turtle recovery plans, developed jointly by the Fish and Wildlife Service and NOAA Fisheries Service,... | <urn:uuid:e4a254b2-723a-4d7e-8b1e-2e9cdcb97614> | 3.421875 | 386 | Knowledge Article | Science & Tech. | 36.185294 |
First of all, try to avoid the term "HHO" it makes you look like a crackpot. Electrolysis of water produces a mixture of molecular hydrogen (H2) and molecular Oxygen (O2) in a 2:1 ratio, there is no such thing as "HHO".
Second thing to know, is that no matter what you do, the energy into the system is more than the ene... | <urn:uuid:ba29777d-0247-4ce3-be20-8cc6a95634dd> | 2.90625 | 477 | Comment Section | Science & Tech. | 54.846807 |
Audio animations of pulsating stars
When a star pulsates, it does so in many modes simultaneously, each with
a slightly different frequency. The periods of the pulsations are
typically many minutes, but speeding them up by a factor of 300,000 in
these computer simulations brings the pulsations into the audible range.
E... | <urn:uuid:e0bf90dd-0622-41d6-966a-5c453e2a4924> | 3.125 | 275 | Knowledge Article | Science & Tech. | 47.091486 |
The Case of the Alternating Ice Sheets
There has been a wave of triumphal announcements by climate change proponents recently, almost giddy over the summer shrinkage of the Arctic ice sheet. “Lowest level ever!” they proclaim, thought that is not quite true. Nonetheless, The Arctic pack ice has been receding over the l... | <urn:uuid:361f5a39-5a42-4e14-8b66-777f248575e7> | 2.953125 | 2,146 | Personal Blog | Science & Tech. | 41.017961 |
BUTTERFLY EFFECT BY NADIM CHOWDHURY
What is Butterfly Effect?
The "Butterfly Effect" is the propensity of a system to be sensitive to initial conditions. Such systems over time become unpredictable, this idea gave rise to the notion of a butterfly flapping it's wings in one area of the world, causing a tornado or some ... | <urn:uuid:630ad580-74fc-4d76-b762-0fcec12607f4> | 3.6875 | 953 | Knowledge Article | Science & Tech. | 42.441396 |
A NASA image that suggests the origin of Earth's atmosphere. Earthís atmosphere evolves continuously. Early in our planetís history, gases from volcanoes and material from comets contributed to the atmosphere. Once life began, plants and animals became another contributing factor to the evolution of the atmosphere. Cou... | <urn:uuid:f1e7f52d-4fb7-45e8-a7dc-3e8a8852bd8a> | 3.421875 | 64 | Knowledge Article | Science & Tech. | 23.964353 |
The birth of a glacier
What makes a glacier?
A glacier carves a U-shaped valley
Illustrated explanations show how a glacier changes a meandering, V-shaped stream valley into a relatively straight, U-shaped valley in 4 steps.
Carving a cirque at the head of an alpine glacier
Illustrated explanations shows the developmen... | <urn:uuid:1132ac99-5950-42bc-a629-221e01f307c2> | 3.921875 | 140 | Content Listing | Science & Tech. | 43.70875 |
Source of image:
To read an interesting article which discusses why there seem to be so many predators
in the Palmyra Atoll (which is located here):
please click on the following link:
I have done some research online to determine in my own mind why Palmyra Atoll has more
predatory species existing there than in nearby... | <urn:uuid:b46cdccc-1adc-4441-a317-9df1075f3a96> | 3.234375 | 1,738 | Personal Blog | Science & Tech. | 37.838751 |
I . WHAT' S HAPPENIN G TO GLOBA L CLIMATE ?
Warm current i reduces Peruvian > fish catch by
45 per cent
criticise the GCMs of the early 1990s for their over-prediction of the average surface temperature rise. What Singer and others such as Frederick Seitz, past President of the US National Academy of Sciences, patently... | <urn:uuid:269f8df6-ef3d-4f4b-88c9-49e34c097785> | 3.015625 | 2,665 | Academic Writing | Science & Tech. | 45.525425 |
(Submitted September 10, 1999)
I have studied with fascination the massive gamma ray burst event
(GRB990123) that has shocked astronomers with the unimaginable power of the
burst that occurred on the 23 of January this year. One press release
claimed that if the same event happened a mere 2000 light years away, it
woul... | <urn:uuid:8ecbad98-4bd1-4db9-a257-3a9f5c202325> | 3.640625 | 622 | Q&A Forum | Science & Tech. | 54.4625 |
Hydroelectric systems make use of the energy in running water to create electricity. In coal and natural gas systems, a fossil fuel is burned to heat water. The steam pressure from the boiling water turns "propellors" called turbines. These turbines spin coils of wire between magnets to produce electricity. Hydropowere... | <urn:uuid:2cab7f65-38ba-4164-ac73-58801fd68003> | 3.875 | 296 | Knowledge Article | Science & Tech. | 27.06797 |
Illustration courtesy NASA
Published September 9, 2011
It's coming from outer space.
Sometime in the next few weeks, pieces of a defunct NASA satellite will rain down on an unlucky patch of Earth.
Precisely where and when the space debris will hit home are not yet known, though the U.S. government will have a better pi... | <urn:uuid:936bb4a0-98cc-4ed2-9a6d-87f268c1ef36> | 3.8125 | 930 | Content Listing | Science & Tech. | 46.797888 |
Use the diagram to investigate the classical Pythagorean means.
Show that the arithmetic mean, geometric mean and harmonic mean of
a and b can be the lengths of the sides of a right-angles triangle
if and only if a = bx^3, where x is the Golden Ratio.
What is the relationship between the arithmetic, geometric and
harmo... | <urn:uuid:d04f7e89-3056-4448-8d0d-2d0c952cdd17> | 3.234375 | 93 | Tutorial | Science & Tech. | 53.498311 |
Find a quadratic formula which generalises Pick's Theorem.
Manufacturers need to minimise the amount of material used to make
their product. What is the best cross-section for a gutter?
Can you find a general rule for finding the areas of equilateral
triangles drawn on an isometric grid?
Prove that the area of a quadri... | <urn:uuid:7e9f1f5b-1873-4a93-a00f-acfde2e19401> | 3.28125 | 1,650 | Content Listing | Science & Tech. | 67.065028 |
At this site we keep several lists of primes, most notably the list of the 5,000 largest known primes. Who found the most of these record primes? We keep separate counts for persons, projects and programs. To see these lists click on 'number' to the right.
Clearly one 100,000,000 digit prime is much harder to discover ... | <urn:uuid:f169239f-67b7-4fb4-aae4-72f868f151d3> | 2.96875 | 586 | Knowledge Article | Science & Tech. | 75.005185 |
DETERMINATION OF SODA ASH PURITY
Standardization of HCl In the fume hood, prepare a solution of HCl that is about 0.1 M by dissolving 10 mL of conc. HCl in about 1 L of DI water. Dry about 1.5 g of primary standard sodium carbonate for 1 h at 160oC, cool in your desiccator, and using an analytical balance weigh at leas... | <urn:uuid:b6a8041c-4467-4714-8b3d-4e695a0ba294> | 3.046875 | 374 | Tutorial | Science & Tech. | 61.167039 |
Glucose and other simple carbohydrates can be converted to more complicated carbohydrates such as starch and cellulose.
Carbon dioxide is the fourth most abundant gas in the atmosphere, but on the planets Venus and Mars it is the most abundant. The gas traps infrared radiation emitted from the warm earth surface. Carbo... | <urn:uuid:0a0c688e-48b6-4002-9b57-f146b85e468c> | 3.21875 | 147 | Knowledge Article | Science & Tech. | 31.435 |
Actually the reason that whales are so big is related to the medium that they live in. Water provides buoancy so the gravitational pull of a large body isn't the same issue that it would be on land. Also, life in water means that the animal must find a way to reserve body heat (heat is lost about 20 times faster in wat... | <urn:uuid:45fafb23-ea12-4677-b142-257f6621a256> | 3.3125 | 161 | Comment Section | Science & Tech. | 49.213763 |
Evidence of String Theory: Gamma Ray Bursts
Among the various phenomena in the universe, two types produce large amounts of energy and may provide some insight into string theory: gamma ray bursts (GRBs) and cosmic rays.
Exactly what causes a gamma ray burst is disputed, but it seems to happen when massive objects, suc... | <urn:uuid:6fc0be54-a1d4-495f-b5da-53ecf60b35de> | 4.15625 | 554 | Knowledge Article | Science & Tech. | 36.443764 |
The Molecular Formula of Compounds.
A compound was found to contain
48 g of carbon and 12 g of hydrogen.
The relative molecular mass of the compound is 30.
What is the molecular formula of the compound?
1) Find how many moles of carbon
react with how many moles of hydrogen.
RAM of C = 12, RAM of H = 1.
moles = mass ÷ R... | <urn:uuid:3d48c2d3-e4bc-4df3-9755-136d4b3ea867> | 3.5 | 304 | Tutorial | Science & Tech. | 83.456253 |
Be it an individual, small business or large corporates… Everyone has become highly environment conscious. Everybody is seeking to promote Eco-Friendly products and thereby do their bit in spreading environmental consciousness. A large part of going green is being done through technology that reduces carbon footprint t... | <urn:uuid:22b66064-aded-48ed-9e8f-a58a7a8faaa2> | 2.796875 | 562 | Listicle | Science & Tech. | 37.232834 |
Formation Of Invisible Foci
( Originally Published 1905 )
This extraordinary deportment of the elementary gases naturally directed attention to elementary bodies in other states of aggregation. Some of Melloni's results now attained a new significance. This celebrated experimenter had found crystals of sulphur to be hi... | <urn:uuid:f0254617-9c84-4c41-8780-8e795043c816> | 3.375 | 800 | Nonfiction Writing | Science & Tech. | 29.992046 |
The jet stream is a narrow river of air high in the atmosphere. At times there can be several types of jet streams. The polar jet brings down cold air. The subtropical jet brings warmth and moisture from the Pacific Ocean. A low level jet can occur at night and help fuel thunderstorms.
Upper level air patterns can help... | <urn:uuid:89f88818-25ee-46dd-9c6d-f87013878e9d> | 3.3125 | 102 | Truncated | Science & Tech. | 67.806207 |
Querying and formatting
resource mysql_query ( string query [, resource link_identifier])
int mysql_num_rows ( [resource result])
The majority of your interaction with MySQL in PHP will be done using the mysql_query() function, which takes one parameter - the SQL query you want to perform. It will then perform that que... | <urn:uuid:86c1102b-6715-45d9-abda-f3391eccb4c4> | 3.171875 | 445 | Documentation | Software Dev. | 28.373354 |
Right now I have a graduate student working on a project to understand the effects of stream restoration in altering patterns of groundwater-stream exchange. She’s working in four stream reaches with varying restoration patterns and watershed land uses. In one of her streams, there is a restoration structure she calls ... | <urn:uuid:a5018420-9a83-4d7c-8969-0545b3b52bcf> | 2.921875 | 580 | Personal Blog | Science & Tech. | 50.885476 |
New Scientist: Scientists have determined that two high-energy neutrinos detected by the South Pole IceCube Neutrino Observatory originated in outer space. Since the discovery of “Bert and Ernie” last year, the IceCube collaboration has been reexamining the data gathered from May 2010 to May 2012. So far they have foun... | <urn:uuid:fc2c1cad-ab5d-4e4e-be37-f18f8568fdf5> | 3.625 | 2,161 | Content Listing | Science & Tech. | 30.843558 |