(PhysOrg.com) -- At the end of the Cretaceous period some 65 million years ago, an asteroid slammed into Mexico’s Yucatan Peninsula, causing severe but selective extinction. While that is widely accepted, ...
Jan 19, 2012
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Many scientists have thought that dinosaur predecessors missed the race to fill habitats emptied when nine out of 10 species disappeared during the Earth's largest mass extinction, approximately 252 million ...
Apr 29, 2013
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A team of scientists has pieced together how the hominid Australopithecus sediba (Au. sediba) walked, chewed, and moved nearly two million years ago. Their research, which appears in six papers in the latest ...
Apr 11, 2013
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(Phys.org) —A new study shows for the first time that microorganisms are thriving deep within the oceanic crust under the sea floor, and hence far from light or oxygen.
Mar 15, 2013
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While many assume that a comet or asteroid impact killed off the dinosaurs, the actual dates of the impact and extinction are imprecise enough that some have questioned the connection. UC Berkeley and Berkeley ...
Feb 07, 2013
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An international team of researchers has reconstructed the common ancestor of placental mammals—an extremely diverse group including animals ranging from rodents to whales to humans—using the world's ...
Feb 07, 2013
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The latest study of the microscopic wear patterns on the teeth of the American lions and saber-toothed cats that roamed North America in the late Pleistocene found that they were living well off the fat of ...
Dec 26, 2012
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(Phys.org)—A team of US biologists has found that the chytrid fungus, believed to be responsible for amphibian deaths worldwide, also infects and kills crayfish. In their paper published in the Proceedings of ...
Dec 18, 2012
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Scientists have discovered why the 'broken world' following the worst extinction of all time lasted so long – it was simply too hot to survive.
Oct 18, 2012
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The most-studied mass extinction in Earth history happened 65 million years ago and is widely thought to have wiped out the dinosaurs. New University of Washington research indicates that a separate extinction ...
Sep 05, 2012
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(Phys.org) -- The second-largest mass extinction in Earth's history coincided with a short but intense ice age during which enormous glaciers grew and sea levels dropped. Although it has long been agreed that ...
Apr 10, 2012
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In the Jurassic era, even the flea was a beast, compared to its minuscule modern descendants. These pesky bloodsuckers were nearly an inch long.
Feb 29, 2012
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Scientists have uncovered a lot about the Earth's greatest extinction event that took place 250 million years ago when rapid climate change wiped out nearly all marine species and a majority of those on land. ...
Jan 05, 2012
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(Phys.org) —Herds of wooly mammoths once shook the earth beneath their feet, sending humans scurrying across the landscape of prehistoric Ohio. But then something much larger shook the Earth itself, and ...
May 20, 2013
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