I also think climate change is real but I'm not sure to what degree man caused vs natural causes. The earth has gone thru at least 5 ice ages, in between it got real warm and at that time there were either no people of so few they could not affect the climate. Much was caused by other factors like big asteroids hitting the earth, or large volcano eruptions, spewing thousands of tons of vulcannic ash into the atmosphere, causing a solar winter. Man and his dirty ways certainly tips the scale of pollution in the wrong direction, but is it 1%, 2% or even more that is really caused by human activity? I don't think anyone really knows.