A volcanic idea for cooling the earth

Researchers will be using various methods to gather data about a volcanic eruption as soon as it begins and forseveral years afterwards. Photo Credit: Iris Gottlieb/The New York Times
A quarter-century ago, Pinatubo, a volcano in the Philippines, blew its top in a big way: it spewed a cubic mile of rock and ash and 20 million tonnes of sulphur di...