Dyson's view notwithstanding, a little research proves exactly the opposite . Multiple, evidence-based sources cite that roughly 97% of scientists around the world agree that climate change is real and human activity is the main driver. 

- https://www.skepticalscience.com/global-warming-scientific-consensus-basic.htm
- http://climate.nasa.gov/scientific-consensus/
- https://en.m.wikipedia.org/wiki/Surveys_of_scientists'_views_on_climate_change