▁other ▁nations ▁consequ ently ▁ignored ▁their ▁p led ges ▁to ▁the ▁agreement . ▁ ▁Rec ently , ▁the ▁UN ▁Inter g overn ment al ▁P anel ▁on ▁Cl imate ▁Change ▁released ▁a ▁report ▁that ▁says ▁“ urg ent ▁and ▁un pre ced ented ▁changes ▁are ▁needed ▁to ▁reach ▁the ▁target ” ▁of ▁keeping ▁the ▁global ▁temperature ▁at ▁moder ate ▁levels . ▁They ▁state ▁that ▁countries ▁M UST ▁follow ▁the ▁Paris ▁Ag re ement ▁p ledge ▁to ▁keep ▁temper atures ▁between ▁ 1 . 5 ▁degrees ▁Cel si us ▁and ▁ 2 ▁degrees ▁Cel si us , ▁otherwise ▁the ▁earth ▁faces ▁the ▁complete ▁er adic ation ▁of ▁cor als ▁and ▁the ▁mel ting ▁of ▁the ▁Ar ctic ▁ice ▁caps . ▁The ▁P anel ▁continues ▁to ▁explain ▁that ▁a ▁rise ▁in ▁temper atures ▁would ▁also ▁trigger ▁cat ast roph ic ▁results ▁in ▁the ▁form ▁of ▁inten se ▁natural ▁dis aster s , ▁un predict able ▁weather , ▁and ▁food ▁short ages . ▁  In ▁order ▁to ▁prevent ▁this ▁outcome ▁govern ments ▁would ▁need ▁to ▁require ▁a ▁“ super charg ed ▁roll - back ▁of ▁em issions ▁courses ▁that ▁have ▁built ▁up ▁over ▁the ▁past ▁ 2 5 0 ▁years .” ▁In ▁order ▁to ▁do ▁so ▁develop ments ▁in ▁land ▁use ▁and ▁techn ological ▁changes ▁are ▁necessary . ▁Car bon ▁poll ution ▁would ▁have ▁to ▁be ▁cut ▁by ▁ 4 5 % ▁by ▁ 2 0 3 0 ▁and ▁come ▁down ▁to ▁ 0 ▁by ▁ 2 0 5 0 . ▁Although ▁this ▁would ▁require ▁carbon