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Remember when showing up on the red carpet in a hybrid was a political statement? Now it's one if you don't. What was once a cause c�l�bre has now become the norm as the entertainment industry has embraced the green movement. We asked some of our favorite TV stars what measures they take to reduce their carbon footprint. Their answers were both informative and surprising.
SHERYL CROW -- The singer traveled around U.S. colleges in April to raise awareness about global warming. Crow toured in a biodiesel-powered bus to university campuses with a final stop in Washington for Earth Day on April 22. Crowe and Karl Rove, political strategist to President George W. Bush, clashed over global warming at a White House dinner just after her tour.