Now, on global climate change research has clearly pointed out that since the end of last century from the Earth's surface temperature increased by began.

现在，关于全球气候变化的研究已经明确指出了自上个世纪末起地球表面的温度就已经开始上升。

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What is the impact of solar radiation over the earth and human being? 1 maintains the earth's surface temperature 3 maintains main sources of energy of human being.

太阳辐射对地球和人类的影响是什么？(1)维持地表温度(3)维持人类的主要能源。

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To offset the rise in temperature expected by the middle of the century if things carry on as they are, the amount of sunlight reaching the Earth's surface would have to be cut by just 1.1%.

如果进行得顺利的话，本世纪中叶就能抵消上升的气温，到达地球的光照将会减少1.1%。

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As near as anyone can figure, the Earth's surface temperature increased 1 degree Fahrenheit in the 20th century.

FORBES: Fact and Comment

Geothermal systems gather energy present beneath the earth's surface, where the temperature averages 55 degrees (higher in Texas, lower in North Dakota), and concentrate it to provide space heating.

FORBES: Magazine Article