So, Hurricane/Nor 'Easter Sandy destroyed thousands of trees. Trees breathe in carbon dioxide and breathe out oxygen (the latter of which we thank them kindly for, since we humans breathe that). Oh, and then we humans produce too much carbon dioxide by our cars and stuff, which in turn is warming the planet, which in turn creates humongous storms like Sandy, which in turn destroys thousands of trees which are no longer there to breathe in the extra carbon dioxide (and give us oxygen to breathe), and all that extra carbon dioxide which these nice trees are no longer there to breathe in creates the global warming which creates the humongous storms which destroys more trees...(rinse and repeat)
From The NY Times:
Sandy Uprooted Trees by the Thousands in NY, NJ They fell by the thousands, like soldiers in some vast battle of giants, dropping to the earth in submission to a greater force.