"The average American produces about 20 tons of the major greenhouse gas carbon dioxide (CO2) every year. That might sound like a lot — and Americans do have among the biggest carbon footprints in the world — but the entire world emits around 27 billion tons of CO2 each year, through transportation, electricity use, deforestation. Look at those numbers for a moment, and you'll realize there's very little that any of us can do on an individual level to stop climate change. Live like a monk, take away your 20 tons — stop breathing if you'd like — and you'll barely scratch the surface."-- Bryan Walsh, writing for TIME Magazine.