White roofs could save planet

(Greenbang): The idea of painting roofs white to reflect the sun’s rays and help cool houses naturally without energy-intensive air conditioning isn’t exactly new and has been floating around for a while. Now a new study claims to show that painting roofs white can help combat global warming. It claims that if the world’s 100 biggest cities installed white roofs and changed to ‘cool’ pavements with more reflective materials such as concrete it would be enough to offset 44GT (giga tonnes) of carbon dioxide emissions. Go to article