Word: tunguska
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Dates: during 2000-2009
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...only 49,000 years ago that an iron asteroid blasted out Arizona's three-quarter-mile-wide Meteor Crater, almost certainly killing any living creatures for hundreds of miles around. As recently as 1908, a small rocky asteroid or chunk of a comet exploded five miles above the Tunguska region of Siberia, felling trees, starting fires and killing wildlife over an area of more than 1,000 sq. mi. Had the blast, now estimated at tens of megatons, occurred over New York City or London, hundreds of thousands would have died...