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Throughout history, volcanoes have ejected staggering quantities of material into our atmosphere.
In our modern world, these eruptions pose many dangers.
But it isn't always the ejected lava that causes the most problems.
On March 20 2010 a volcano erupted in Iceland.
Eyjafjallajökull
Iceland
March 2010
It was a relatively minor eruption, but the resulting giant ash ...
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