I thought this paper was very interesting:

http://www.stanford.edu/~moore/health.html

From the conclusion:

Although it is impossible to measure the gains exactly, a moderately warmer climate would be likely to benefit Americans in many ways, especially in health and in satisfying people's preferences for more warm weather. Most people would enjoy higher temperatures, and the evidence supports the proposition that humans would live longer and avoid some sickness. Less cold weather would mean less snow shoveling, fewer days of driving on icy roads, lower heating bills, and reduced outlays for clothing.

So why are we trying so hard to prevent global warming, when on balance it would almost certainly benefit us?

D

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