(PhysOrg.com) -- In contrast to a toothed whale, which retains teeth that aid in capturing prey, a living baleen whale (e.g., blue whale, fin whale, humpback, bowhead) has lost its teeth and must sift zooplankton and small ...
Plants & Animals
Sep 29, 2010
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How long have viruses been around? No one knows. Scientists at Portland State University have begun taking the first steps toward answering this question.
Earth Sciences
Sep 6, 2010
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A newly developed test could make checking DNA from people arrested for crimes with DNA samples from crime scenes stored in forensic databases almost as easy as matching fingerprints. With the test, police could check on ...
Analytical Chemistry
Aug 4, 2010
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A scientific reconstruction of one of the oldest sets of human remains found in the Americas appears to support theories that the first people who came to the hemisphere migrated from a broader area than once thought, researchers ...
Archaeology
Jul 23, 2010
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Two genes controlling a tissue protein may have played a role in the key period when fish shed their fins and became limbed land-lovers, a study published by Nature on Thursday said.
Biotechnology
Jun 24, 2010
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In recent years, DNA evidence has added important new tools for scientists studying the human past. Now, a collection of reviews published by Cell Press in a special issue of Current Biology published online on February 22nd ...
Evolution
Feb 22, 2010
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Building on prior investigation into the biological mechanisms through which monarch butterflies are able to migrate up to 2,000 miles from eastern North America to a particular forest in Mexico each year, neurobiologists ...
Plants & Animals
Jan 25, 2010
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Penguins that died 44,000 years ago in Antarctica have provided extraordinary frozen DNA samples that challenge the accuracy of traditional genetic aging measurements, and suggest those approaches have been routinely underestimating ...
Evolution
Nov 10, 2009
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When the ancestors of living cetaceans—whales, dolphins and porpoises—first dipped their toes into water, a series of evolutionary changes were sparked that ultimately nestled these swimming mammals into the larger hoofed ...
Evolution
Sep 24, 2009
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Researchers at the University of Leeds have devised a more accurate method of dating ancient human migration - even when no corroborating archaeological evidence exists.
Cell & Microbiology
Jun 4, 2009
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