High thin clouds contribute to heating while low thick clouds cool Earth.

高而薄的云层有助于升温，而低而厚的云层使地球冷却。

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It's very close, but overall the cumulative effects of cloud are to cool Earth rather than heat it.

这十分相近，但是总体上来说，云的累积作用是降低地球的温度而不是让地球升温。

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Cool Earth plans to open a 1-megawatt facility this summer.

酷地球公司预定今年夏天启动一百万瓦的发电设施。

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But now Cool Earth Solar of Livermore, California, has come up with what it hopes will be a better, cheaper alternative: balloons.

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In summer the reverse process takes place: The (comparatively) cool earth becomes a waste dump for unwanted heat that accumulates inside the house.

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At low altitudes they help to cool the Earth by reflecting sunlight away from it.

ECONOMIST: Climatology: Grey-sky thinking | The