Sniffing Out Volcanoes
It may be possible to sniff out a soon-to-erupt volcano, according to Chinese scientists Chih-Chieh Su and Chih-An Huh. They have evidence that the air downwind of a volcano that?s ready to blow is laced with a distinctive radioactive gas.
The researchers measured high levels of radioactive polonium-210 in the air at Nankang in Taiwan several days and weeks before three eruptions of the Mayon volcano in the Philippines in June 1999 and early January and late February 2000.
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