Reuters: Poring over a Bangladeshi flood map as a London financial analyst 12 years ago, Mark Campanale had no idea the moment would spawn a financial concept powerful enough to rivet central bankers, anger oil moguls and fuel a grassroots movement to get investors to dump their fossil fuel holdings.
The map was in the prospectus of a British firm seeking to raise money to build a coal-fired power plant in Bangladesh. Not only was Campanale angry that a company would pump more carbon emissions into the...