What we know now . . .
Submitted by sorrowforhumans on Mon, 04/04/2016 - 8:13pmDocuments surfaced this year concerning Exxon Mobil's knowledge and research into Climate change.
http://insideclimatenews.org/news/18092015/exxon-confirmed-global-warmin...
If Exxon knew, it stands to reason that each succeeding administration knew, from the time of 1982 when these documents were first created.