Global cooling anyone?
Once all the flight disruptions have stopped, the ash has been cleared from the South American highways, and human affairs appear to have returned to normal, the legacy of the ash and dust thrown up by the Puyehue-Cordon Caulle volcano in Chile may well live on.
The longer-term effects of all this ash and dust could be of wider environmental concern than, say, a few hundred thousand stranded passengers, as difficult as it is for those people.
Volcanic eruptions are awesome spectacles. In part this is due to millions of tonnes of tiny ash and dust particles, known as volcanic aerosols, being blasted high into the air. We've all marvelled at the photographs.
Read more: http://www.theage.com.au/opinion/society-and-culture/global-cooling-anyone-20110616-1g4st.html#ixzz1QTyPlKza
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