Melting Arctic ice could transform international shipping routes, study finds

With climate change rapidly warming the world's oceans, the future of the Arctic Ocean looks grim. Climate models show that parts of the Arctic that were once covered in ice year-round are warming so quickly that they will be reliably ice-free for months on end in as few as two decades. The Arctic's changing climate will endanger countless species that thrive in sub-zero temperatures, scientists say.

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