Shell’s 28-minute film, called Climate of Concern, was made for public viewing, particularly in schools and universities. It warned of extreme weather, floods, famines, and climate refugees as fossil fuel burning warmed the world. The serious warning was “endorsed by a uniquely broad consensus of scientists in their report to the United Nations at the end of 1990,” the film noted.
“If the weather machine were to be wound up to such new levels of energy, no country would remain unaffected,” it says. “Global warming is not yet certain, but many think that to wait for final proof would be irresponsible. Action now is seen as the only safe insurance.”A separate 1986 report, marked “confidential” and also seen by the Guardian, notes the large uncertainties in climate science at the time but nonetheless states: “The changes may be the greatest in recorded history.”
Follow the Grist link to watch the video.