"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 ...

When researcher Jared Towers set up his cameras underwater to observe a pair of killer whales, he saw something strange.

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

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.