In the past three decades global catches of sturgeons and paddlefishes have dropped by over 99 per cent, documenting severe population losses, according to a new WWF report.
Ecology
May 23, 2016
0
17
A new study suggests that volcanic eruptions did not lead to the extinction of the dinosaurs, and also demonstrates that Earth's oceans are capable of absorbing large amounts of carbon dioxide—provided it is released gradually ...
Earth Sciences
Apr 26, 2016
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134
Imagine dolphins disappearing from the world's oceans as a result of prolonged climate change and slower evolution. As shocking and unlikely as such an event might be, it happened in the past to a group of marine animals: ...
Archaeology
Mar 9, 2016
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80
Fluctuating sea levels and global cooling caused a significant decline in the number of crocodylian species over millions of years, according to new research.
Archaeology
Sep 24, 2015
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967
Earth's biosphere witnessed its greatest ecological catastrophe in the latest Permian, dated to about 251.9 million years ago. The current model for biodiversity collapse states that both marine and terrestrial animals were ...
Earth Sciences
Sep 22, 2015
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16
New research has revealed abrupt warming, that closely resembles the rapid man-made warming occurring today, has repeatedly played a key role in mass extinction events of large animals, the megafauna, in Earth's past.
Ecology
Jul 23, 2015
30
131
Since the Cambrian Explosion, ecosystems have suffered repeated mass extinctions, with the "Big 5" crises being the most prominent. Twenty years ago, a sixth major extinction was recognized in the Middle Permian (262 million ...
Earth Sciences
Apr 15, 2015
1
45
Consensus is growing that we are steering towards a sixth mass extinction event. There are calls for increased efforts to stop the accelerating loss of plants and animals. But do we really need to protect all species from ...
Environment
Jan 12, 2015
11
49
(Phys.org) —Scientists have long believed an asteroid that collided with the Earth around 66 million years ago, leaving an enormous crater near Chicxulub Mexico, caused the demise of the dinosaurs and many other living ...
The end of the Permian geologic time period, 252 million years ago, was marked by huge volcanic eruptions that resulted in global warming and a change in climate so severe it caused the extinction of nearly all animals on ...
Environment
Feb 26, 2014
1
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