For more than 250 million years, four-limbed land animals known as tetrapods have repeatedly conquered the Earth's oceans. These creatures—such as plesiosaurs, penguins and sea turtles—descended from separate groups of ...
Plants & Animals
Apr 16, 2015
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27
A new University of Toronto study may force scientists to rethink what is behind the mass extinction of amphibians occurring worldwide in the face of climate change, disease and habitat loss.
Evolution
Feb 18, 2015
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18
New research by the University of Sheffield has warned of the increasing risk of extinction to our marine life.
Ecology
Jan 29, 2015
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48
Closely related groups can differ dramatically in their diversity, but why this happens is a fundamental question in evolutionary biology, dating back to Darwin's observation that a few hyper-diverse groups dominate the modern ...
Archaeology
Nov 6, 2014
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0
Modern-day puffins and auks have long been recognized as environmental indicator species for ongoing faunal shifts, and fossil records now indicate that ancient relatives were similarly informative. Researchers have found ...
Ecology
Oct 15, 2014
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0
The most comprehensive family tree of meat-eating dinosaurs ever created is enabling scientists to discover key details of how birds evolved from them.
Archaeology
Sep 25, 2014
2
2
(Phys.org) —University of Georgia ecologists John Gittleman and Patrick Stephens are contributors to a major new study that finds that species are going extinct today 1,000 times faster than during pre-human times—a rate ...
Ecology
Sep 18, 2014
17
0
Depictions of animals in ancient Egyptian artifacts have helped scientists assemble a detailed record of the large mammals that lived in the Nile Valley over the past 6,000 years. A new analysis of this record shows that ...
Ecology
Sep 8, 2014
2
0
It's hard to comprehend how bad the current rate of species extinction around the world has become without knowing what it was before people came along. The newest estimate is that the pre-human rate was 10 times lower than ...
Ecology
Sep 2, 2014
6
0
The worst mass extinction the Earth has ever seen occurred 252 million years ago. The boundary of the Permian and Triassic geological periods marked the demise of around 90 percent of marine species and 70 percent of land ...
Earth Sciences
Aug 15, 2014
5
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