Dozens of people have evacuated two towns on Japan's main southern island of Kyushu, where a volcano spewed ash and large rocks into the nighttime sky. The rocks fell as far as 1.5 miles from the ...
After an eruption, DIY cushions of gas help searing torrents of gas, ash, and rock spread miles from their source within a matter of minutes. Pyroclastic flows contain a deadly combination of hot rock ...
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