June 6, 1978 J. F. Black sent a memo to F. G. Turpin, Vice President of Exxon’s Research and Engineering Company, that included the presentation and text Black made to the Corporation Management Committee in July 1977 after several people requested the prepared text.

Black notes the general scientific consensus surrounding the likely manner that the global climate is influenced by mankind burning fossil fuels. Black also notes that doubling of carbon dioxide is estimated to increase the average global temperature by 1 to 3 degrees celsius, with a 10 degree celsius warming of the poles; and that more research is needed to examine the validity and significance of the predictions but that mankind has a 5 to 10 year window to obtain the necessary information.