
First Purebred Bison Calf Born after Disease-Washing Embryo Transfer
John R. Platt is the editor of The Revelator. An award-winning environmental journalist, his work has appeared in Scientific American, Audubon, Motherboard, and numerous other magazines and publications. His "Extinction Countdown" column has run continuously since 2004 and has covered news and science related to more than 1,000 endangered species. John lives on the outskirts of Portland, Ore., where he finds himself surrounded by animals and cartoonists.

First Purebred Bison Calf Born after Disease-Washing Embryo Transfer

Japanese River Otter Declared Extinct

Cougars Are Returning to Midwest After 100 years
Cougars are returning to the U.S. Midwest

Updates from the Brink: Dying Devils, Disappearing Vultures and a $473,000 Fish

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Extinction Countdown: Your Turn

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