Countries "once again stopped short of committing to the sort of far-reaching new goals scientists say are needed to rein in emissions," as The Post's Brady Dennis and Juliet Eilperin report from the summit. “Greta Thunberg laid down a clear line in the sand, separating those countries and leaders who are united behind the science from those who continue to place the profits of fossil fuel polluters above the safety of their citizens,” Alden Meyer, director of strategy and policy at the Union of Concerned Scientists, said in a statement. “Sadly, most leaders from the world’s largest emitting countries failed this litmus test, dodging their responsibility to step up action as is essential to address the climate emergency we now face.”...