The world must slash the output of gas, coal, and oil in the next ten years or global warming will reach dangerous levels, a U.N.-backed study released Wednesday demanded, before lamenting nobody appears to be heeding its continued advice on the matter as fossil fuel production is set to soar over next decade. The report published by the U.N. Environment Program found while national governments have made ambitious pledges to curb greenhouse gas emissions, they are still not getting even close to matching promises to eliminate the fossil fuel industry that powers the global economy. Many actually look to extract...