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Scientists to deploy giant balloon 20km above earth in climate-cooling experiment http://apocadocs.com/s.pl?1314923273
It sounds barmy, audacious or sci-fi: a tethered balloon the size of Wembley Stadium suspended 20km above earth, linked to the ground by a giant garden hose pumping hundreds of tonnes of minute chemical particles a day into the thin stratospheric air to reflect sunlight and cool the planet.
A team of British academics will next month formally announce the first step towards creating an artificial volcano by going ahead with the world's first major geo-engineering field test in the next few months. The ultimate aim is to mimic the cooling effect that volcanoes have when they inject particles into the stratosphere that bounce some of the sun's energy back into space, so preventing it from warming the earth and mitigating the effects of man-made climate change....
If the technical problems posed by controlling a massive balloon at more than twice the cruising height of a commercial airliner are resolved, then the team from Cambridge, Oxford, Reading and Bristol universities expects to move to full-scale solar radiation tests....
"This hose would be just like a garden hose - 20km long - and we can pump stuff up the pipe. The nice thing about it is we can have a knob, if you like, which we can control to adjust the rate at which we inject these particles."
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