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As climate talks drag on, more ponder techno-fixes http://apocadocs.com/s.pl?1291479067
Like the warming atmosphere above, a once-taboo idea hangs over the slow, frustrating U.N. talks to curb climate change: the idea to tinker with the atmosphere or the planet itself, pollute the skies to ward off the sun, fill the oceans with gas-eating plankton, do whatever it takes.
As climate negotiators grew more discouraged in recent months, U.S. and British government bodies urged stepped-up studies of such "geoengineering."... Schemes were floated for using aircraft, balloons or big guns to spread sulfate particles in the lower stratosphere to reflect sunlight, easing the warming scientists say is being caused by carbon dioxide and other greenhouse gases emitted by industry, vehicles and agriculture.
Others suggested assembling gargantuan mirrors in orbit to fend off the solar radiation. Still others propose -- and a German experiment tried -- seeding the ocean with iron, a nutrient that would spur the spread of plankton, which absorb atmospheric carbon dioxide.
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[Read more stories about:
anthropogenic change, carbon emissions, geoengineering, global warming]
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