The reason some people are skeptical to the actual degree of how much impact humans have on global climate change, is because the end of the world predictions ,made by so called experts on climate science in the 1990's did not happen.The arctic is not ice free during the summer months.The islands of Tuvalu did not sink.the Antarctic ice sheet is not receding, but expanding.They ignored the"Pause" in global warming and changed the term from "global warming" to "Climate Change". The hacked emails from the UK's university of east anglia put those scientists in a bad light by proving that they are not impartial to Data analysis. They could not make accurate 20 year predictions then.Now those same scientists expect us to believe their predictions for the next 50 to 100 years?