Ten thousand years ago, the Americas teemed with mastodons, giant ground sloths, and saber-toothed cats. Within a few ...

Add Yahoo as a preferred source to see more of our stories on Google. Once upon a time, our world was home to many giants. Between around 50,000 and 10,000 years ago, nearly 200 of the world's largest ...

A new study shows how the loss of large animals thousands of years ago still shapes ecosystems today and may affect their ...

The extinction of the megafauna – giant marsupials that lived in Australia until 60,000 to 45,000 years ago – is a topic of fierce debate. Some researchers have suggested a reliance on certain plants ...

Prehistoric humans hunt a woolly mammoth. More and more research shows that this species – and at least 46 other species of megaherbivores – were driven to extinction by humans. The debate has raged ...

Australia is known for its unusual animal life, from koalas to kangaroos. But once upon a time, the Australian landscape had even weirder fauna, like Palorchestes azael, a marsupial with immense claws ...

Scientists have unravelled a mystery about the disappearance of dwarf hippos and elephants that once roamed the picturesque landscape on the Mediterranean island of Cyprus before palaeolithic humans ...

"The art of tracking may well be the origin of science." This is the departure point for a 2013 book by Louis Liebenberg, co-founder of an organization devoted to environmental monitoring. The demise ...

The Blue Buck antelope disappeared from Earth more than 200 years ago. Now, Colossal Biosciences says it can bring it back.