People think about geothermal energy — when they think about it at all — in terms of the hot water bubbling up in some places, but two kilometers or so down in most places there are these incredibly hot rocks, ‘cause the interior of the earth is extremely hot, several million degrees (sic), and the crust of the earth is hot …
-Al Gore, to Conan O'Brien
Gee! And to think there's only six degrees from Kevin Bacon!
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