Tropics cooled by volcanic eruptions, says studyDecember 21, 2008 in Earth / Earth Sciences
Volcanic eruptions have periodically cooled the tropics over at least the last 450 years by spewing out particles that girdle the world at high altitude and reflect sunlight, according to a study released Sunday.
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"Tropics cooled by volcanic eruptions, says study" December 21, 2008 http://phys.org/news/2008-12-tropics-cooled-volcanic-eruptions.html