Biologist Jon Allen is the proud owner of the world's oldest ribbon worm on record. The adopted invertebrate is fondly called ...

Giant tortoises are some of the long-lived species on the planet. Here’s what biologists now understand about one of nature’s ...

Nowadays archaeologists guess that ancient humans first entered the Americas as long as 24,000 years ago, perhaps via a sea ...

The Taliban is investigating an Afghan man's claim that he is 140 years old - which would make him the oldest person ever to have lived. Aqel Nazir, who lives in the country's eastern Khost province, ...