BBC: Carbon emissions from new coal-fired power stations could contribute to mass extinctions, a leading climate scientist has warned. Nasa scientist James Hansen said the only way to prevent a “disaster” for future generations was to phase out use of the dirtiest fossil fuel. He was speaking ahead of a protest in Coventry against energy firm E.ON’s plans for a plant at Kingsnorth, Kent. E.ON said it had urged the government to fund technology to capture carbon. Dr …