Under the Paris Agreement on climate, nearly every country will have to drastically reduce their carbon emissions, and they were supposed to submit renewed plans to do so by the end of 2020.The first raft of "nationally determined contributions" (NDCs) submitted in 2015 would put Earth on course to be at least three degrees Celsius (C) hotter than pre-industrial times, a far cry from the Paris temperature cap goal of keeping warming "well below" two degrees C.Under the dea