Scientists may have been getting shark ages wrong. A new study uses chemical signals in bones to track age more accurately.

A creature born before Isaac Newton, older than the United States, and still alive today – meet the world’s longest-living vertebrate. Every so often, the internet latches onto an image that makes ...

Not many scientific studies sound like a Bond film, but ours really does involve lasers, sharks and doctors (of research, not the evil kind).

But why did sharks get so incredibly diverse and odd during this period, only to lose most of that diversity forever? Eons is available to stream on pbs.org and the free PBS App, available on iPhone, ...