Photo: Extreme Global Warming Fix Proposed: Fill the Skies With Sulfur

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The June 1991 eruption of Mount Pinatubo in the Philippines sent millions of tons of sulfur into the atmosphere, which cooled Earth by 0.9 degree Fahrenheit (0.5 degree Celsius) the following year.

A scientist has proposed re-creating this effect by seeding the upper atmosphere with sulfur to help stave off the effects of global warming.

Photograph courtesy Dave Harlow/USGS

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