A top US general on Thursday called for international rules to control chaotic space traffic, warning satellites are increasingly at risk of collision.
Space Exploration
May 13, 2010
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A new commentary on the nature of pathogens is raising startling new questions about the role that fundamental science research on evolution plays in the understanding of emerging disease.
Ecology
May 13, 2010
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(PhysOrg.com) -- The evolution of flight took longer than previously thought with the ancestors of modern birds “rubbish” at flying, if they flew at all, according to a Manchester scientist.
Archaeology
May 13, 2010
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In a paper published this week in the journal Science, experts caution that important ethical issues in the testing of new therapies like stem cells may not be receiving the attention they deserve. Carnegie Mellon University's ...
Other
May 13, 2010
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A major survey of lizard populations worldwide has found an alarming pattern of population extinctions attributable to rising temperatures. If current trends continue, 20 percent of all lizard species could go extinct by ...
Plants & Animals
May 13, 2010
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Tiny variations in the isotopic composition of silver in meteorites and Earth rocks are helping scientists put together a timetable of how our planet was assembled beginning 4.568 billion years ago. The new study, published ...
Earth Sciences
May 13, 2010
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Members of a population of identical cells often "choose" different fates, even though they exist in identical conditions.
Cell & Microbiology
May 13, 2010
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An aggressive, invasive aquatic organism that is on the state's most dangerous species list has been discovered in both Winchester Bay and Coos Bay, and scientists say this "colonial tunicate" - Didemnum vexillum - has serious ...
Ecology
May 13, 2010
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If you were a mouse, a mere whiff of a cat, rat or snake would be enough to send you into a fearful state. Your stress hormone levels would go up and you'd begin to take extra precautions, hugging the ground as you carefully ...
Cell & Microbiology
May 13, 2010
2
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A visible satellite image on Wednesday, May 12 at 13:10 UTC (9:10 a.m. EDT) from NASA's Aqua satellite's Moderate Resolution Imaging Spectroradiometer (MODIS) instrument captured the Eyjafjallajokull Volcano's ash plume (brown).
Earth Sciences
May 13, 2010
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