News tagged with natural
New simulation shows consequences of a world without Earth's natural sunscreen (w/Video)
Space & Earth / Earth Sciences
Mar 19, 2009 |
4.5 / 5 (119) |
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(PhysOrg.com) -- The year is 2065. Nearly two-thirds of Earth's ozone is gone -- not just over the poles, but everywhere. The infamous ozone hole over Antarctica, first discovered in the 1980s, is a year-round ...
New Pattern Found in Prime Numbers
May 08, 2009 |
4.5 / 5 (83) |
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(PhysOrg.com) -- Prime numbers have intrigued curious thinkers for centuries. On one hand, prime numbers seem to be randomly distributed among the natural numbers with no other law than that of chance. But ...
UN warns of 'megadisasters' linked to climate change
Jun 17, 2009 |
4.3 / 5 (58) |
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The United Nations on Tuesday raised the prospect of "megadisasters" affecting millions of people in some of the world's biggest cities unless more is done to heed the threat of climate change.
Time in a bottle: Scientists watch evolution unfold
Oct 18, 2009 |
4.6 / 5 (42) |
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A 21-year Michigan State University experiment that distills the essence of evolution in laboratory flasks not only demonstrates natural selection at work, but could lead to biotechnology and medical research ...
Hydrocarbons in the deep Earth?
Space & Earth / Earth Sciences
Jul 26, 2009 |
4.3 / 5 (42) |
27
The oil and gas that fuels our homes and cars started out as living organisms that died, were compressed, and heated under heavy layers of sediments in the Earth's crust. Scientists have debated for years ...
Social scientists build case for 'survival of the kindest'
Other Sciences / Social Sciences
Dec 08, 2009 |
4.2 / 5 (36) |
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(PhysOrg.com) -- Researchers at the University of California, Berkeley, are challenging long-held beliefs that human beings are wired to be selfish. In a wide range of studies, social scientists are amassing ...
Evolution may take giant leaps
Dec 11, 2009 |
4.5 / 5 (27) |
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(PhysOrg.com) -- A new study of thousands of species of plants and animals suggests new species may arise from rare events instead of through an accumulation of small changes made in response to changes in ...
Hundreds of Natural-Selection Studies Could be Wrong, Study Demonstrates
Mar 30, 2009 |
4.8 / 5 (20) |
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(PhysOrg.com) -- Scientists at Penn State and the National Institute of Genetics in Japan have demonstrated that several statistical methods commonly used by biologists to detect natural selection at the molecular ...
Are humans still evolving? Absolutely, says new analysis of long-term survey of human health
Oct 19, 2009 |
4 / 5 (21) |
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Although advances in medical care have improved standards of living over time, humans aren't entirely sheltered from the forces of natural selection, a new study shows.
US energy use drops in 2008
Jul 20, 2009 |
4.7 / 5 (17) |
7
Americans used more solar, nuclear, biomass and wind energy in 2008 than they did in 2007, according to the most recent energy flow charts released by the Lawrence Livermore National Laboratory. The nation used less coal ...
Past regional cold and warm periods linked to natural climate drivers
Space & Earth / Earth Sciences
Nov 26, 2009 |
3.8 / 5 (19) |
31
Intervals of regional warmth and cold in the past are linked to the El Niño phenomenon and the so-called "North Atlantic Oscillation" in the Northern hemisphere's jet stream, according to a team of climate scientists. These ...
Fossilised pregnant fish was one of the first animals to have sex
Biology /
Feb 25, 2009 |
4.9 / 5 (14) |
3
(PhysOrg.com) -- A pregnant fossil fish at the Natural History Museum in London has shed light on the possible origin of sex, according to a study published in Nature today by an international team includ ...
What's the semantic organization of human language?
Other Sciences / Social Sciences
Aug 11, 2009 |
4.5 / 5 (14) |
0
A Chinese semantic network with semantic (argument structure) annotation was built and investigated for finding its global statistical properties. The results show that semantic network is also small-world and scale-free ...
Texas education board approves science standards (Update)
Mar 27, 2009 |
4.1 / 5 (15) |
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(AP) -- Texas will no longer require educators to teach weaknesses of all scientific theories, including evolution.
47-million-year-old fossil could shed light on primate family tree
Other Sciences / Archaeology & Fossils
May 19, 2009 |
4.8 / 5 (13) |
2
(PhysOrg.com) -- A 47-million-year-old primate fossil, a purported "missing link" between primates and humans, was unveiled this week in New York. The fossil, formally called Darwinius masillae but nicknamed ...
