New York Roof Study Shows Drastic Cooling with White Surfaces


White roofs gain in popularity for their green impact

Yale e360 published today news that a New York City roof covered in a white synthetic membrane was on average 43 degrees F cooler than surrounding black tar and asphalt roofs during times of peak heat last summer. The news favoring white roofs is based on a study by scientists from Columbia University and NASA.

On the hottest day of the summer when the city set a record for electricity usage during a heat wave — the dark surfaces of some New York City roofs reached 170 degrees F, while temperatures on the white test roof peaked at less than 130 degrees F.

The city’s CoolRoofs initiative is working to install “living roofs” with plants and to convert many tar and asphalt roofs to a white color using membranes or white paint. The goal, the city says, is to help reduce the urban “heat island” effect, which can boost temperatures by 5 to 7 degrees F, especially at night.

Lowering the heat island effect would reduce demand for air conditioning and cut illnesses and deaths during heat waves. Converting roofs to white is cheaper than planting “living roofs,” and research showed said that the white membrane roof performed well over numerous years of the study.

“Bright is the new black,” said Stuart Gaffin, a Columbia research scientist and lead author of the study, published in Environmental Research Letters.

Sources: NASA, Columbia, Yale e360

Photo:  Walmart Stores


AT&T Helps TOMS Shoes Celebrate 1 Millionth Shoe Donation

Wireless News August 13, 2010

Wireless News 08-13-2010 AT&T Helps TOMS Shoes Celebrate 1 Millionth Shoe Donation Type: News here toms shoes coupon code

TOMS Shoes, a company that matches every pair of shoes purchased with a pair of new shoes given to a child in need, announced it is celebrating its one millionth pair of new shoes this September by hosting a contest with AT&T, a communications holding company, where the winner will be at the millionth shoe drop in Argentina this fall.

AT&T said it is hosting a contest on its corporate website where supporters can design their own pair of shoes. One guest will be selected at random to attend the one millionth shoe drop in Argentina. The contest ends on August 29.

In addition, AT&T and TOMS Shoes are teaming up with Gowalla, a location-based mobile and web service, to spread the word about the TOMS Shoes one millionth pair shoe drop, and to allow users to interact with the latest mobile technology while registering for the chance to win prizes from AT&T.

Between August 16 and 29, each time a Gowalla user, regardless of wireless provider, ‘checks in’ on their mobile device at locations that fall under the apparel or technology category, he or she will have the chance to find a virtual item, win an instant prize and will be entered for the chance to win the grand prize trip to Argentina. Instant prizes include a pair of TOMS Shoes, AT&T smartphones and AT&T netbooks. One grand prize winner will be randomly selected from amongst all participants to win a trip to attend the one millionth shoe drop in Argentina in September with a guest. website toms shoes coupon code

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