Voice of America: A pod of killer whales trapped in the ice of Canada's Hudson Bay successfully has left the small opening where they were gasping for breath, but marine specialists say global warming could cause more incidents like this.
Lyne Morissette, a marine researcher with the St. Lawrence Global Observatory in Quebec, said the 12 orcas may simply have gotten lost while hunting for seals and other food, but it's more likely they got stuck in the ice because of climate change.
"They tend to base their...