(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 ...
Evidence left at the crime scene is abundant and global: Fossil remains show that sometime around 252 million years ago, about 90 percent of all species on Earth were suddenly wiped out—by far the largest of this planet's ...
Earth Sciences
Mar 31, 2014
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Scientists from Carnegie and Smithsonian museums and the University of Utah today unveiled the discovery, naming and description of a sharp-clawed, 500-pound, bird-like dinosaur that roamed the Dakotas with T. rex 66 million ...
Archaeology
Mar 19, 2014
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The space rock that smashed into Earth 65 million years ago, famously wiping out the dinosaurs, unleashed acid rain that turned the ocean surface into a witches' brew, researchers said Sunday.
Earth Sciences
Mar 9, 2014
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The largest mass extinction in the history of animal life occurred some 252 million years ago, wiping out more than 96 percent of marine species and 70 percent of life on land—including the largest insects known to have ...
Earth Sciences
Feb 10, 2014
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What did Tyrannosaurus rex really look like? Depending on which artist's impression you look at, the carnivorous king of the Cretaceous was a dull grey, an earthy brown, maybe a dark green... perhaps it was ochre, or even ...
Archaeology
Jan 8, 2014
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(Phys.org) —Until it became extinct in the 15th century, the moa, a flightless bird, played a significant role in New Zealand's ecology. In a study published in the Proceedings of the National Academy of Sciences, Alan ...
A team of geneticists and computer scientists from the San Diego Zoo Wildlife Alliance, Cornell University and the University of California, Santa Cruz, has created a computer model that shows it should be possible to save ...
During the Late Pleistocene, California—at least at its lower elevations—was teeming with vegetation. While much of North America was covered in Ice Age glaciers, here, mastodons lumbered across verdant meadows, stopping ...
Ecology
Mar 27, 2024
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In a new study, researchers have used the fossil record to better understand what factors make animals more vulnerable to extinction from climate change. The results could help to identify species most at risk today from ...
Plants & Animals
Mar 7, 2024
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