new york massachusetts institute technology officials say u.s. president donald trump badly misunderstand research cite thursday justify withdraw unite state paris climate agreement trump announce speech white house rise garden decide pull landmark climate deal part would reduce global temperatures fast enough significant impact even paris agreement implement full total compliance nations estimate would produce two-tenths one degree celsius reduction global temperature year 2100 trump say tiny tiny amount claim attribute research conduct mit accord white house document see reuters cambridge massaschusetts-based research university publish study april 2016 title much difference paris agreement make show countries abide pledge deal global warm would slow 0.6 degree 1.1 degrees celsius 2100. reuters world pledge save environment despite trump musk iger quit trump advisory councils trump administration ask supreme court revive travel ban certainly support withdrawal u.s. paris agreement say erwan monier lead researcher mit joint program science policy global change one study author anything might shoot degrees would catastrophic say john reilly co-director program add mit scientists contact white house offer chance explain work paris accord reach nearly 200 countries 2015 mean limit global warm degrees less 2100 mainly country pledge cut carbon dioxide emissions burn fossil fuel pact unite state world second big carbon emitter behind china commit reduce emissions 26 percent 28 percent 2005 level 2025. senior administration official defend trump use find mit think consensus environmental community elsewhere paris agreement negligible impact climate official tell reporters brief dispute late round years-long battle scientists politicians interpret facts effect burn fossil fuel global climate translate policy trump repeatedly cast doubt science climate change call hoax perpetrate china weaken u.s. business trump misunderstand mit climate research university officials say