Joe Romm: White Roofs Are the Trillion-Dollar Solution

This post is almost a month old, but it keeps coming up in conversation.

[A] global “cool roofs” strategy can achieve ... the equivalent of several trillion dollars worth of CO2 reductions — since it can increase the albedo (reflectivity) of the planet, thereby directly reducing the absorption of incoming solar radiation and hence planetary warming. The strategy proposed below “is equivalent to taking the world’s approximately 600 million cars off the road for 18 years.”

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