THERE'S A JOBS PROGRAM FOR THE UR:

Whitening Cities' Roofs Is Environmental Equivalent of Taking 300 Million Cars Off the Road, DoE Study Says (Rebecca Boyle, 07.21.2010, Popular Science)

Whitening the world's roofs would offset the emissions of the world's cars for 20 years, according to a new study from Lawrence Berkeley National Laboratory.

Overall, installing lighter-colored roofs and pavement can cancel the heat effect of two years of global carbon dioxide emissions, Berkeley Lab says. It's the first roof-cooling study to use a global model to examine the issue. [...]

Lightening-up roofs and pavement can offset 57 billion metric tons of carbon dioxide, about double the amount the world emitted in 2006, the study found. It was published in the journal Environmental Research Letters.