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Jul 4, 2011 at 4:01 PM
Scientists have come up with a possible explanation for why the rise in Earth's temperature paused for a bit during the 2000s, one of the hottest decades on record.
Apr 5, 2011 at 3:08 PM
To the quiet green solitude of an English country estate they retreated, to think the unthinkable: reflecting the sun to cool the Earth's atmosphere.
Apr 3, 2011 at 3:09 PM
In three intense days, four dozen thinkers pondered the planet's fate as it grows warmer, weighed the idea of reflecting the sun to cool the atmosphere and debated the question of who would make the decision to interfere with nature to try to save the planet.
Apr 24, 2008 at 11:12 AM
Some researchers have suggested that injecting sulfur compounds into the atmosphere might help ease global warming. But a new study warns that injecting enough sulfur to reduce warming would wipe out the Arctic ozone layer.
Mar 18, 2007 at 12:23 PM
They are exploring global warming solutions that sound wholly far-fetched, including giant artificial ''trees'' that would filter carbon dioxide out of the air and a bizarre ''solar shade'' created by a trillion flying saucers that lower Earth's temperature.
Nov 16, 2006 at 1:54 PM
Prominent scientists and Nobel laureates are discussing the idea of deliberately producing a layer of pollution as shade to help cool the planet.