Earth looked much different not just millions, but even decades and centuries ago. Many animal species that once existed are ...

Scientists from Oregon State University looked at coastal martens in the town of Klamath for three months ...

Sometimes an animal long thought to be extinct reappears decades or centuries later, shocking scientists! Join Hank Green for a look at seven species that we thought were gone forever... but are back ...

Few people know that the Zebra had a close relative, native to South Africa, that went extinct in the late 1800s. Here’s its story. Countless species have come and gone in the short history of life on ...