Interesting concept that has apparently been out for awhile: white roofs as a mechanism to combat global warming! It sounds so simple, it’s unbelievable. Of course, the media would jump on this and make fun of Energy Sec, Steven Chu. Ugh, the media is so bored right now.
The concept is simple but the numbers he cites are massive: Making roofs and pavement more reflective could offset 44 billion tons of CO2, or the equivalent of taking all of the world’s cars off the road for 11 years. [Source]