Scientists also declared several other extinctions, including the first documented plant extinction in New Hampshire.

As more and more "historical" checklists are added to the platform, birds we've lost now mingle with those still hanging on.

What happens when the biodiversity witnessed by one generation fades into memory the next? These questions are crossroads at ...

Around 50,000 years ago, North America was home to a diverse array of megafauna. Mammoths roamed the tundra, while towering ...

Mass extinction events are infamous, entirely destroying many species in one fell swoop. But this particular extinction event ...

Imagine creatures that have survived since the time of dinosaurs. Species like the tuatara, sturgeon, crocodile, hagfish, ...

A 68-million-year-old skull fossil found in Antarctica has revealed the oldest known modern bird, which was likely related to the waterfowl that live by lakes and oceans today, according to new ...

Sharks and rays have populated the world's oceans for around 450 million years, but more than a third of the species living ...

(CNN) — CNN is tracking mass shootings in the United States using data from the Gun Violence Archive, a nonprofit group formed in 2013 to track gun-related violence. Both CNN and GVA define a ...