Agence France-Presse: It seems the dire warnings about future devastation sparked by global warming have not been dire enough, top climate scientists warned Saturday. It has been just over a year since the Nobel-winning Intergovernmental Panel on Climate Change (IPCC) published a landmark report warning of rising sea levels, expanding deserts, more intense storms and the extinction of up to 30 percent of plant and animal species. But recent climate studies suggest that report significantly …