Mother Jones: There's a growing interest among enviros these days in combating climate change with direct offensives against the fossil fuel industry, sights locked on its bottom line. The idea is that while we scramble to invent more efficient light bulbs and throw up solar panels, we also chip away at the mountain of money that gives the industry its power, by turning shareholders on to the idea that unwise investments can make them accomplices in global warming. Activist investment is nothing new, of course,...