'Bleak' U.N. Report Finds World Heading to Climate Catastrophes

Four years after countries struck a landmark deal in Paris to rein in greenhouse gas emissions in an effort to avert the worst effects of global warming, humanity is headed toward those very climate catastrophes, according to a U.N. report issued Tuesday, with China and the United States, the two biggest polluters, having expanded their carbon footprints last year."The summary findings are bleak," the report said, because countries have failed to halt the rise of greenhouse gas emissions even af