"Orcas often share food with each other—it's a prosocial activity and a way that they build relationships with each other.

Killer whales are one of the most intelligent animals; only humans have a larger brain relative to their body size, according ...

In a baffling show of generosity, killer whales across the globe are giving fish to humans—and scientists are racing to ...

Ireland’s water quality suffers from high nitrate levels, warns EPA; Social Democrats call for urgent government action.