Only on the "CBS This Morning" podcast, CBS News' Errol Barnett talks with the mayor of Georgetown, Texas - a town run 100 percent on renewable energy. Mayor Dale Ross says he didn't set out to save the world and that going green was purely a business decision. He explains how the city decided to opt for solar and wind energy over fossil fuels and what the federal government can do to help people transition from coal mines to the renewable energy industry. Plus, Mayor Ross discusses how misinformation regarding climate science gets spread in the Republican party.