Related topics: species · climate change

Untangling the branches in the mammal tree of life

The mammal tree of life is a real leaner. Some branches are weighed down with thousands of species—we're looking at you, rodents and bats—while others hold just a few species.

Colorful Tennessee fish protected as endangered

n response to a petition and lawsuit from the Center for Biological Diversity, the U.S. Fish and Wildlife Service protected the Barrens topminnow today under the Endangered Species Act. The small, colorful fish is found only ...

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