A new World Meteorological Organization report spells the end of the goal to limit warming to 1.5 degrees Celsius above preindustrial levels.Seven years ago, the U.N. Intergovernmental Panel on Climate Change predicted that the world wouldn’t warm 1.5 degrees Celsius above preindustrial levels until 2040.Then two years ago, the group predicted the world would pass that threshold between 2030 and 2035.Now, new data from the World Meteorological Organization released Wednesday indicates that the Earth will cross this point in just two years.The accelerated timeline is due to higher-than-expected temperatures over the past few years, diminishing air pollution that cooled the...