These ash clouds can help to reduce global warming by cooling the planet through reflecting sun light. An 1815 eruption in Indonesia previously had such an effect, but also caused a "year without a summer" where European harvests suffered and economic collapse resulted. Read more: http://www.businessinsider.com/volcano-ash-europe-2010-4#ixzz0lJN5ExMb By the way the Volano is melting the glacier.... could it be that man made global warming was all guess and no science?