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Surprise Yellowstone geyser eruption highlights little known hazard at popular park

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By MATTHEW BROWN, AMY BETH HANSON and MEAD GRUVER BILLINGS, Mont. (AP) — A surprise eruption of steam in a Yellowstone National Park geyser basin that sent people scrambling for safety as basketball-sized rocks flew overhead has highlighted a little-known hazard that scientists hope to be able to predict someday. The hydrothermal explosion on Tuesday […]

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