Exxon's own research confirmed fossil fuels' role in global warming
Top executives were warned of possible catastrophe from greenhouse effect, then led efforts to block solutions.
At a meeting in Exxon Corporation's headquarters, a senior company scientist named James F. Black addressed an audience of powerful oilmen. Speaking without a text as he flipped through detailed slides, Black delivered a sobering message: carbon dioxide from the world's use of fossil fuels would warm the planet and could eventually endanger humanity.