Mass extinctions occurring over the past 260 million years were likely caused by comet and asteroid showers, scientists conclude in a new study published in Monthly Notices of the Royal Astronomical Society.
Earth Sciences
Oct 20, 2015
13
1167
Widespread species are at just as high risk of being wiped out as rare ones after global mass extinction events, says new research by UK scientists.
Archaeology
Aug 11, 2015
1
56
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
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131
When Charles Darwin published his theory of evolution by natural selection in 1859, the world hadn't even heard of plate tectonics. The notion that continents drifted on molten rock currents deep in the Earth's mantle was ...
Earth Sciences
Jul 16, 2015
5
232
An international team led by researchers from the Evolutionary Studies Institute (ESI) at the University of the Witwatersrand, Johannesburg, has obtained an age from rocks of the Great Karoo that shed light on the timing ...
Archaeology
Jul 7, 2015
10
1432
New research shows that the fearsome teeth of the saber-toothed cat Smilodon fatalis fully emerged at a later age than those of modern big cats, but grew at a rate about double that of their living relatives. The findings, ...
Archaeology
Jul 1, 2015
0
73
A pair of paleobiologists from Scripps Institution of Oceanography, UC San Diego have determined that the world's most numerous and diverse vertebrates – ray-finned fishes – began their ecological dominance of the oceans ...
Evolution
Jun 30, 2015
0
151
There is no longer any doubt: We are entering a mass extinction that threatens humanity's existence.
Ecology
Jun 19, 2015
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6034
Global warming will eventually push 1 out of every 13 species on Earth into extinction, a new study projects.
Ecology
Apr 30, 2015
1
46
The largest magmatic events on Earth are caused by massive melting of ascending large volumes of hot material from the Earth's interior.
Earth Sciences
Apr 24, 2015
0
80
