Mythbusters 10: Isn’t global warming the result of volcanic activity?

Mythbusters 10

And in fact, volcanic activity in modern times has a cooling effect, not a warming one, as it increases the particulate matter in the atmosphere, thereby reducing albedo (the reflection of the sun’s rays). Major eruptions can reduce the Earth’s temperature by up to half a degree for a period of several years, but these effects are temporary. The last major eruption that had an impact on global temperatures was that of Mount Pinatubo in 1991.

Click here for a comprehensive list of more than eighty climate denial myths – all busted!

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