Skepticism in science should always be present , to a reasonable degree . The thing is though that the scientific community has pretty much been in consensus for decades now . It wasn ' t until the 80 s that it was brought up to Congress that measures needed to be put in place to deal with it . Everyone was on board . it was Bush ' s administration in 1989 and they were ready to get going on it . Until the Georce C . Marshall Institute decided to take James Hansen ' s research from his Congressional testimony and cherrypick half a graph and then demand equal time to share their findings . Everything then came to a screeching halt . Fast forward to the present . in 2013 and 2014 , 69 , 406 authors had peer reviewed articles published . 4 of them rejected anthropogenic global warming . The global warming denialists were helped along by Al Gore when he said Florida would be underwater . It ' s a perfect opportunity for denialists to say well see , they were COMPLETELY wrong about this prediction . how do we know they ' ll be right about everything else ?