For major issues such as the melting ice caps and the greenhouse effect, governments and large companies are duty-bound to take necessary measures.

对于诸如冰冠融化和温室效应等重大问题，政府和大公司有责任采取必要的措施。

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Melting ice caps, hunting and over-fishing were identified as the culprits.

冰川消融、猎和过度捕捞都是造成这些物种濒临灭绝的原因。

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This is true whether we are speaking of melting ice caps in one part of the world or rising unemployment in another.

无论是极地冰盖融化，或是失业率上升，都在世界范围内有着深刻的影响。

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The fate of polar bears weighs on our collective conscience more than pandas because of melting ice caps.

NPR: Environmentalists Point Beyond Global Warming

When we think about climate change, we are no longer thinking about polar bears stranded on melting ice caps.

FORBES: What does Climate Change Have to Do With Health Care?

Warmer temperatures are already melting ice caps, leading to rising sea levels.

WSJ: Should There Be a Price on Carbon Emissions?