Articles on Extinction

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The now-extinct giant beaver once lived from Florida to Alaska. It weighed as much as 100 kilograms, roughly the same as a small black bear. Illustrated by Luke Dickey/Western University

Why giant human-sized beavers died out 10,000 years ago

Scientists studied the fossilized bones of giant beavers to understand what they ate and whether the species could keep up with environmental change.
A modern mouse lemur Microcebus sits upon the cranium of an extinct Megaladapis lemur. Dao Van Hoang www.daovanhoang.com

Last of the giants: What killed off Madagascar’s megafauna a thousand years ago?

A series of new studies sheds light on the population crash and extinction of the giant birds, lemurs and more that roamed the island until around A.D. 700-1000.
The Mossy Red-eyed Frog is among hundreds of species threatened with extinction at the hands of chytrid fungus. Jonathan Kolby/Honduras Amphibian Rescue and Conservation Center

Deadly frog fungus has wiped out 90 species and threatens hundreds more

Chytrid fungus has caused declines in 501 amphibian species, according to a new analysis. Most of the damage happened in the 1980s, before the fungus itself was even discovered.

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