If you think you have nothing to do with global warming, think again. From the car you drive to the house you live in, nearly everything you do contributes to your "carbon footprint" -- your impact on the environment.
"Everything we do generates some kind of environmental impact," said Allen Hershkowitz of the Natural Resource Defense Counsel.
Making energy creates carbon dioxide, which scientists say is the leading cause of global warming. But they also agree that if you know how much...Full Story