04/22/2012 02:26 pm ET

Earth Day: Republicans Talk About Climate Change

Sunday is Earth Day, and some Republicans who aren't convinced of climate change may not be celebrating. Mitt Romney's views on the matter have evolved to "we don't know what's causing climate change," while Sen. James Inhofe (R-OK), the ranking member on the Senate Committee on Environment and Public Works, has used the Bible to deny global warming.

Here is what the GOP presidential candidates and others have to say about climate change.

GOP Positions On Climate Change

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