Scientists told President LBJ about climate change in 1965

http://grist.org/article/scientists-told-president-lbj-about-climate-change-in-1965/


http://www.dailyclimate.org/tdc-newsroom/2015/02/president-johnson-carbon-climate-warning

https://www.theguardian.com/environment/climate-consensus-97-per-cent/2015/nov/05/scientists-warned-the-president-about-global-warming-50-years-ago-today