On Thursday’s CBS Early Show, co-host Julie Chen teased an upcoming segment on a new way to combat global warming: "Up next, if you could do one thing to fight global warming, would you do it? How about painting your roof white? We’ll explain." Fill-in co-host Chris Wragge later introduced the report: "Could painting your roof white be the best defense against global warming? Some very important people think so. So Early Show national correspondent Hattie Kauffman put that idea to the test."
Kauffman explained: "In any given city, most rooftops are black. And that's the problem. The darker the surface, the more heat it retains...the lighter the surface, the better it is for the environment." Kauffman talked to Bill Nye, ‘The Science Guy,’ who further explained: "The building doesn't get as hot so you don't need to run the air conditioner nearly as long."
Later, Kauffman cited Obama Energy Secretary Steven Chu: "[he] says if all rooftops and roads in the world were made white it could combat global warming." A clip was played of Chu claiming: "That would be the equivalent as if you took off all the automobiles of the world for eleven years." Kauffman added: "Think of it this way, every year you would keep out of the atmosphere 2.4 billion tons of carbon dioxide or the emissions produced by 60 million cars. There’d be even more savings if roads and parking lots were not covered in black asphalt." Nye declared that asphalt was: "...absorbing more heat...squandering billions of tons of carbon dioxide every year."