Global Warming is an event that could possibly cause melting of the polar ice caps, rising sea levels, raised temperatures, and widespread famine.

全球变暖可能使极地冰块融化、海平面上升、气温升高以及遍布饥荒。

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The finding adds to evidence of increased global warming in recent years and indicates that melting polar ice sheets are pushing sea levels higher, the authors report.

笔者写道新的发现为近年来全球气温升高增添了实证，它也预示着正在熔解的极地冰雪使得海平面越来越高。

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Melting ice, droughts, earlier springs, as well as disappearing polar bears and frog extinctions are among the signs that global warming is already having an effect on the planet, experts say.

专家说，冰层融化，干旱，春季提早，以及北极熊和青蛙的消失，都在向我们发出信号：全球变暖已经在影响这颗星球了。

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Melting ice, especially in Greenland and the Arctic, is also thought to contribute to global warming, Zwally said.

CNN: Ice melting across globe at accelerating rate, NASA says