White roofs have always been considered a “soft” geoengineering scheme — an easy, painless way to cool the planet slightly in order to buy us time to reduce emissions and halt the global rise in temperatures. But even this simple solution can create unforeseen side effects. If white roofs are more complicated than expected, then what about all those other proposed schemes — like pumping sulfur into the air or lacing the ocean with iron — to artificially cool the planet?
The Washington Post’s Wonkbook
on a recent Stanford study that shows that white-roofs make the world warmer, contrary to initial thinking.