Some species officially bid us farewell this year. They may have long been gone, but following more recent assessments, ...

An elusive wild cat long feared extinct in Thailand has been rediscovered three decades after the last recorded sighting, ...

The moa were a group of giant flightless birds that lived in New Zealand. They disappeared from Earth about 600 years ago, ...

The Christmas Island shrew, a species of cone snail (Conus lugubris), the slender-billed curlew, and three Australian mammals ...

Swedish scientists recover RNA from a 130-year-old Tasmanian tiger, revealing gene activity and ancient viruses in extinct ...

Scientists extracted RNA from a 130-year-old specimen, uncovering which genes were active before the animal went extinct.

Flat-headed cats are among the world's rarest and most threatened wild felines, with the last documented sighting in Thailand ...

Rarely do species presumed extinct reappear with renewed hope for a better future. But researchers in Australia not only ...

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 ...

From an Australian frog that swallowed its own eggs to woolly mammoths, scientists are getting ever closer to being able to bring long-lost species back from the dead. Millions of years ago thylacines ...