So many humans live on Earth, it’s hard to imagine there are animals we haven’t seen for years, decades, or even millions of ...

This list will probably introduce you to many animals you’ve never heard of before, but chances are you’re familiar with woolly mammoths. It’s one of the most popular and best-studied prehistoric ...

A biotech company says CRISPR could revive extinct animals like the dodo and mammoth — but many scientists remain skeptical.

Just because a species is presumed extinct doesn’t mean it’s gone forever. Here are four glowing examples of this unique, and felicitous, phenomenon. Not all species that have been classified as ...

A citizen scientist’s wildlife photo helped researchers confirm two marsupial species thought extinct for over 7,000 years ...

The pygmy long-fingered possum and the ring-tailed glider, two marsupials believed to have died out thousands of years ago, are still alive in Papuan Indonesia.