The 1956 earthquake was a mainshock–aftershock sequence, with aftershocks lasting at least eight months after the mainshock.
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The U.S. States With the Most Volcanic Activity!The U.S. is home to some of the world’s most powerful volcanoes, but which states have the most? From Hawaii’s lava flows to ...
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10 Facts About Yellowstone National ParkAmerica’s First National ParkYellowstone National Park holds the title of being America's first national park, and it was ...
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