Today I want to talk about the earth last major climate shift at the end of the last Iceage.

今天我想探讨一下地球上最后的一次气候大改变，冰河时期的最后阶段。

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Valente says he isn't sure why carnations suddenly boomed, but he notes that the profusion coincides with a well-known climate shift that rocked Europe 2 million years ago.

Valente说他并不确定为什么石竹属植物突然爆发，但他发现这一物种丰度的突然变化契合了一个著名的气候变换，这一变换在二百万年前震荡了整个欧洲。

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The basic claim of the paper is that by burning fossil fuels at a prodigious pace and pouring heat-trapping gases into the atmosphere, humanity is about to provoke an abrupt climate shift.

这篇论文的基本论点是，人类以惊人的速度燃烧化石燃料，把温室气体排放到大气中，这即将引发剧烈的气候变化。

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Europeans applaud Washington's shift on climate change and new overtures to Iran.

VOA: standard.2009.03.29

And whether or not it sets off a climate shift of Pleistocenic proportions, acidification could kill the researchers' newly-discovered, awe-inspiring reef, along with others we haven't even found yet.

CNN: Scientists discover new species in ocean's depths

Its meteorite was probably too small to shift the climate, but perhaps it was part of a swarm.

WSJ: Matt Ridley on New Support for a Global-Cooling Theory | Mind & Matter

The main reason for the shift is climate change.

ECONOMIST: Nuclear power