National Public Radio: Texas emits more carbon dioxide into the atmosphere than any other state. And if Texas were a country, it would be the seventh-largest carbon dioxide polluter in the world. Texas’s high carbon dioxide output and large energy consumption is primarily a result of large coal-burning power plants and gas-guzzling vehicles, both of which contribute to the pollution problem. But while many Texans think bigger is better, there are signs of an attitude change on energy …