This is literally conspiracy-theory balderdash.
http://climate.ncsu.edu/edu/k12/.gwvcc
https://www.climate.gov/news-feature...climate-change
http://pmm.nasa.gov/education/articl...climate-change
https://www.skepticalscience.com/cli...al-warming.htm
You may as well be complaining that round-Earthers are conspiring to hide the truth about the flat Earth from everyone.