It's easy to find one thing Bachmann has said (see video), namely, that Carbon Dioxide is a naturally-occurring gas that plants benefit from, with the implication that we don't need to worry about it. Bachmann either didn't know, or chose not to tell, the whole story. Water is also a naturally occurring substance that we have to have to sustain life. But that doesn't mean that we can't get too much of it. Just try breathing water! Carbon Dioxide is a natural gas, and one that plants need for photosynthesis, but it is also a greenhouse gas -- one that is transparent to light coming in from the sun, but not so transparent to heat radiated from the earth.
Global Climate Change is by no means the only important issue in the upcoming election, but it is an important one, and at least some of the Republican candidates seem to be either uninformed about it, or engaging in deliberate deception. It is also true that positions on the matter may change, or develop over time.
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