But Corneli also based much of his belief in the inevitability of this transition on the fact that the Earth is heating up and that human beings are responsible.

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The same people that said 20 years ago that the Earth was cooling down are the same ones that said the Earth is now heating up, said Welday.

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In the winter the water pumped down is cooler than the earth, which warms it up for help in heating.

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