Number Two

Of all the odd objections to global warming theory, one of the oddest has got to be the claim that global warming would violate the Second Law of Thermodynamics, since it would imply that the cold upper atmosphere was warming the Earth. One reason it's an odd objection is that nearly every one of us experiences a very similar phenomenon every time we put on a jacket or sweater on a cold day. That jacket or sweater starts out colder than us and stays colder than us (if the air is cold), but it keeps us warm by transferring some of the heat we lose back to us.

The second law doesn't permit **net** transfer of heat from the cooler body to the warmer body, but if it's warmer that the outside, it can slow the loss of that heat. That's what your jacket does on a cold day and that's what the CO2 in the atmosphere does to the surface of the Earth.

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