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Earth

Solar shield would damage the ozone layer

30 April 2008

New Scientist. Science news and long reads from expert journalists, covering developments in science, technology, health and the environment on the website and the magazine.

A PLAN to tackle global warming using a “sulphur sunshade” could backfire spectacularly – such a shade could punch huge holes through the ozone layer above the Arctic and delay the full recovery of the Antarctic ozone hole.

Pumping tiny sulphate particles into the atmosphere to create a sunshield that would keep the planet cool was first suggested as a solution to global warming by Edward Teller in 1998, the physicist best known for his involvement in the development of the hydrogen bomb.

Simone Tilmes of the National Center for Atmospheric Research in Colorado built a computer model of the atmosphere…

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