Humans’ Role In Antarctic Ice Melt Is Unclear

National Public Radio: Ten years ago, a piece of ice the size of Rhode Island disintegrated and melted in the waters off Antarctica. Two other massive ice shelves along the Antarctic Peninsula had suffered similar fates a few years before. The events became poster children for the effects of global warming. But a new study finds that the story isn't quite so simple. There's no question that unusually warm air triggered the final demise of these huge chunks of ice. But a lingering question is whether these events can......

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