A neutrino with 30 times more energy than any previously seen on Earth was detected by an unfinished observatory at the bottom of the Mediterranean Sea after travelling from beyond ...

This is only the second time the species has been recorded while alive. “I thought it was A.I.,” says fish biologist Kory Evans.

The Nicobar Islands are a biodiversity hotspot, home to unique species found nowhere else. Long isolated, these islands have ...

You can watch PBS on television via most cable TV packages — check your local listings for details. You can also live stream "Expedition Killer Whale" for free on the PBS website and app, which will ...

A mother killer whale's 'grief procession' for her dead newborn calf has come to an end. Observed swimming with other members ...

The clip shows a group of seven orcas — four adults and three calves — as they circle a seal on a tiny chunk of ice in western Antarctica’s Marguerite Bay. The lesson, which ...

Orcas, like humans, get baby bumps in the early months of pregnancy and grow larger as the pregnancy advances. Researchers say they can now spot those underwater baby bumps from the air and keep ...