Researchers unearth the truth about volcanic ash

(PhysOrg.com) -- The dispersal of large ash plumes from the Eyjafjallajökull eruption in Iceland has generated widespread interest due largely to the impact on air transport and reports of ash-fall throughout the British Isles. Some reports allude to this as a unique event, which may be true as far as living memory is concerned, but there is ample evidence for such events occurring many times before in recent human history.

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