Global Warming: Protect Climate by Shielding Earth? United Nations Group Discusses 'Geoengineering'

"Global warming" is a phrase guaranteed to generate as much heat as the sun itself. There are many scientists who say we're in serious trouble if we don't reduce the burning of coal and oil -- and others who say it's all exaggerated, perhaps even an elaborate hoax that could crush the economy. But there's a third camp. Call them the geoengineers. Maybe we can protect ourselves, they say -- literally by using smoke and mirrors. They talk of shielding the planet from the sun's heat by...Full Story
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