The X-Men faced several enemies multiple times in their first year, but their first 10 villains include some powerful names.

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

This year, at least six animal and insect species moved to the Extinct category of the IUCN Red List of Threatened Species Kelli Bender is the Pets Editor at PEOPLE. She has been working at PEOPLE ...

Scientists in Sweden recovered RNA from an extinct, 130-year-old Tasmanian tiger, also known as a thylacine. They then traced which genes were active in its tissues. DNA can show what genes exist, but ...

In a promising discovery, authorities have spotted the critically endangered flat-headed cat in Thailand for the first time in 30 years. Notably, the sighting involved more than a single individual.

Some species officially bid us farewell this year. They may have long been gone, but following more recent assessments, they’re now formally categorized as extinct on the IUCN Red List, considered the ...

An elusive wild cat long feared extinct in Thailand has been rediscovered three decades after the last recorded sighting, conservation authorities and an NGO said Friday. Flat-headed cats are among ...

A group of Australian biologists have discovered that a giant snail species considered extinct hasn’t gone the way of the dodo. They undertook one of the largest captive snail breeding and ...

A tiny fish long feared lost has resurfaced in Bolivia, offering a rare conservation success story amid widespread habitat destruction. Moema claudiae, a seasonal killifish unseen for more than 20 ...

On a lawn inside the Bronx Zoo, rows of headstones display multiple animal species, making for an eerie display during the month of October. An Instagram post from an account known as Inside History ...