The amount of greenhouse gases emitted by even a large and ongoing volcanic eruption is miniscule compared to industrial and automotive carbon emissions caused by human activity. Global warming can, however, help trigger volcanic eruptions by melting the ice that keeps rock from turning to magma. Pictured: The Arenal Volcano in Costa Rica, one of the 10 most active volcanoes in the world

EarthTalk: Volcanoes and Global Warming

EarthTalk® is a weekly environmental column made available to our readers from the editors of E/The Environmental Magazine Dear EarthTalk: Is there any link between increased volcanic activity—such as the recent eruptions in Iceland, Alaska and elsewhere—and global warming? – Ellen McAndrew, via e-mail It’s impossible to pin isolated natural phenomena—like an individual volcanic eruption—on global warming, but some researchers…

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What Effect Will the Iceland Volcano Have on Climate?

As the spectacular eruption of Eyjafjoell volcano in Iceland brings most transcontinental air travel between Europe and North America to a screeching halt, the question arises out here in the blogosphere: what effect will the eruption have on global climate? The short answer is none, or very little, or who knows? According to the U.S. Geological Survey, the worlds volcanoes…

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