If you've ever read Robert Fulghum's All I Really Need to Know I Learned in Kindergarten, you know that some of life's most important lessons were learned when we were young. One of them might save the world, sort of. As a kid you learned that light-colored surfaces reflect the sun's rays, while dark surfaces absorb them and warm up. Well, have you ever considered applying this simple technology to your home? Obama's energy secretary Steven Chu is pitching painting all rooftops white to curb global warming, saying that, "it’s the equivalent of reducing the carbon emissions due to all the cars on the road for 11 years," if not more. If that's not reason enough for you to paint it white (what do the Stones know?), consider that a reflective rooftop will reduce your air-conditioning costs this Summer, which in turn will also reduce greenhouse gas emissions. Cha-ching! The folks who built New Orleans's Superdome know what I'm talking about.