A chunk of ice spreading across 18 square kilometers (seven square miles) has broken off a Canadian ice shelf in the Arctic, scientists said Tuesday.
Derek Mueller, a researcher at Trent University, was careful not to blame global warming, but said the event was consistent with the theory that the current Arctic climate isn't rebuilding ice sheets.
"We're in a different climate now," he said. "It's not conducive to regrowing them. It's a one-way process."
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