The antlers of a bull elk, the great bulk of a male elephant seal, the lion’s mane, have all evolved due to competition for reproductive success. These products of “sexual selection” are typically found in male animals. ...
Jan 10, 2007
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Fluctuations in weather and the environment affect survival and reproduction of animals. But are all individuals within a population equally susceptible? Theory on the evolution in age-structured populations suggests not ...
Jan 10, 2007
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Astronomers have discovered the most distant population of star clusters ever seen, hidden behind one of the nearest such clusters to Earth. At a distance of more than a billion light-years, the newly discovered star clusters ...
Astronomy
Jan 10, 2007
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On February 15, NASA will launch the largest number of scientific satellites ever sent into orbit aboard a single rocket. A handful of Alberta scientists will be at Kennedy Space Center watching and waiting. For Dr. Ian Mann ...
Astronomy
Jan 10, 2007
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As the U.S. House seeks to expand embryonic stem cell research funding, the White House is promoting stem cell development methods that don't harm embryos.
Other
Jan 10, 2007
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The position of Britain as a stem cell research leader could be at risk as scientists await action that may override a proposed ban on hybrid embryos.
Other
Jan 10, 2007
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Like cold case investigators, astronomers have used NASA's Chandra X-ray Observatory to uncover evidence of a powerful outburst from the giant black hole at the Milky Way's center.
Astronomy
Jan 10, 2007
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The Atlantic Ocean doesn't receive the mother lode of fixed nitrogen, the building block of life, after all. Instead, comparing fathom for fathom, the Pacific and Indian oceans experience twice the amount of nitrogen fixing ...
Earth Sciences
Jan 10, 2007
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Minerals intended to entrap nuclear waste for hundreds of thousands of years may be susceptible to structural breakdown within 1,400 years, a team from the University of Cambridge and the Pacific Northwest National Laboratory ...
Condensed Matter
Jan 10, 2007
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Engineers have developed a system that uses a simple water purification technique that can eliminate 100 percent of the microbes in New Orleans water samples left from Hurricane Katrina. The technique makes use of specialized ...
Environment
Jan 10, 2007
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