San Francisco Chronicle: When it comes to high-tech possibilities for counteracting climate change, the headlines tend to focus on the seemingly sci-fi stuff: brightening clouds, pumping particles into the stratosphere and launching giant mirrors into space.
But there are down-to-earth versions of the same basic concept, approaches as simple as painting roofs white or using light-colored pavement to cast away more heat from the Earth. A group at Lawrence Berkeley National Laboratories is exploring how big an impact this...