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. Now, they have ...
Earth Sciences
Jan 5, 2012
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In modern ecology, the removal or addition of a predator to an ecosystem can produce dramatic changes in the population of prey species. For the first time, scientists have observed the same dynamics in the fossil record, ...
Evolution
May 2, 2011
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(PhysOrg.com) -- After the biggest mass extinction in Earth's history -- 250 million years ago -- ocean algae and bacteria rebounded so fast that they consumed virtually all the oxygen in the sea, slowing the recovery of ...
Earth Sciences
Mar 25, 2011
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(PhysOrg.com) -- A new technique has allowed scientists to pin down the timing of ancient glaciations, linking them more firmly to two bursts of extinction.
Earth Sciences
Mar 8, 2011
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With the steep decline in populations of many animal species, from frogs and fish to tigers, some scientists have warned that Earth is on the brink of a mass extinction like those that occurred only five times before during ...
Ecology
Mar 2, 2011
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Spectacular species previously unknown to the outside world are being discovered in the Amazon rainforest at a rate of one every three days, environment group WWF said in a report published Tuesday.
Plants & Animals
Oct 26, 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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(PhysOrg.com) -- A team of international researchers has brought the primary component of mammoth blood back to life using ancient DNA preserved in bones from Siberian specimens 25,000 to 43,000 years old.
Biotechnology
May 3, 2010
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(PhysOrg.com) -- Scientists have performed the first DNA-based reconstruction of the giant extinct moa bird, using prehistoric feathers recovered from caves and rock shelters in New Zealand.
Plants & Animals
Jul 1, 2009
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(PhysOrg.com) -- Were major extinction events real biological catastrophes or were they merely the result of gaps in the fossil record? Research by a team of geologists from the Universities of Bristol, Plymouth, and Saratov ...
Earth Sciences
May 4, 2009
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