Element - - BUSINESS -

Seen from space, the Blue Planet is look­ing whiter in a few more places. There’s a rea­son those pic­tureper­fect, white­washed towns in Greece and Spain look the way they do. Peo­ple in the Mediter­ranean re­alised long ago white roofs were cooler than dark ones. What is new is the re­al­i­sa­tion white roofs could help cool the en­tire planet. In the U.S, white roof projects gained at­ten­tion from Barack Obama’s en­ergy sec­re­tary, the No­bel Prize-win­ning physi­cist Steven Chu, who said power bill sav­ings of 10 or 15 per cent were pos­si­ble in build­ings with white roofs. Chu de­cided all roofs on En­ergy De­part­ment build­ings had to be ei­ther white or re­flec­tive. The White Roof Project of New York told CNN paint­ing 80 per cent of city roofs in the trop­i­cal and tem­per­ate cli­mate zones would off­set the car­bon emis­sions of 300m cars, or 500 coal power plants.

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