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Greenwashing is out, brownwashing is in. These days, GOP politicians are scrambling to distance themselves from past environment-friendly statements, initiatives, and votes. (Thanks to Grist reader Gary Wockner for naming this trend.)

Check out the top 10 offenders. And watch for a lot more Republicans to join the club as we head toward the 2012 election.

Photo: lukexmartin10. Scott Brown

U.S. senator from Massachusetts

Before: “Reducing carbon dioxide emission in Massachusetts has long been a priority of mine,” he said in 2008 when, as a member of the state Senate, he voted in favor of his state joining the Regional Greenhouse Gas Initiative, a carbon-trading initiative in the Northeast. “Passing this legislation is an important step … towards improving our environment.”

After: “I think the globe is always heating and cooling. It’s a natural way of ebb and flow. The thing that concerns me lately is some of the information I’ve heard about potential tampering with some of the information,” he said in December 2009, as the “Climategate” faux-scandal was raging. In April 2011, he voted to strip the U.S. EPA of its authority to regulate carbon dioxide.