The curious minds at What If consider how ecosystems and evolution might change if the largest flying animal never went extinct.

Earth looked much different not just millions, but even decades and centuries ago. Many animal species that once existed are nowhere to be found. From human activity to climate change, new animals ...

Some extinct mammals from Australia's Mammoth Cave included (from left) a giant long-nosed echidna, a short-faced kangaroo, a wombat-like marsupial and a Tasmanian thylacine. - Peter Schouten Recent ...

Back in 1999, the BBC’s Walking with Dinosaurs series spawned a new format: wildlife “documentaries” featuring long-extinct animals. I’m a big fan of this genre, and Prehistoric Planet: Ice Age, made ...

Holly has a degree in Medical Biochemistry from the University of Leicester. Her scientific interests include genomics, personalized medicine, and bioethics.View full profile Holly has a degree in ...