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

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

Killer whales, or orcas, are apex predators known for their intelligence and complex social structures. While wild orcas are not considered a threat to humans and have no recorded fatal attacks, it's ...

Efforts to save the Northwest’s endangered orcas are not working on either side of the U.S.-Canada border, according to an ...

NewsCenter 5 spoke to some Massachusetts-based experts as well as local groups opposing the construction of wind turbines in Massachusetts, to hear their thoughts on Trump's comments.