Walt Kelly, the creator of the comic Pogo, would have understood Global Climate Change well. His 1971 strip with "We have met the enemy and he is us" is as apt today as it was then, except today it is the whole earth we have screwed up.
Wikipedia's entry for this strip:
    http://en.wikipedia.org/wiki/We_have_met_the_enemy#.22We_have_met_the_enemy.....22
The original quote, "We have met the enemy and they are ours...", is by Oliver Hazard Perry during the War of 1812:
   http://www.history.navy.mil/trivia/trivia02.htm
Here is the Pogo version:
