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Cool idea: Paint your roof white

White roofs reflect the heat in Bermuda.
White roofs reflect the heat in Bermuda.

If the 100 biggest cities were to whiten the roofs of all of their buildings and use more reflective pavement, the global cooling effect would be huge, a new study has concluded.

Speaking at the California Climate Change Research Conference in Sacramento, Hashem Akbari, a physicist with the Lawrence Berkeley National Laboratory, said that he has created a formula to determine how much heat-trapping carbon dioxide would be offset by reflecting the solar radiation back into space.

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Related Topics: Greenhouse Effect

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