The Grand Canyon becomes a national park, Michael Jackson's "Thriller" album hits No. 1, a truck bomb explodes under the World Trade Center, and teenager Trayvon Martin is shot and killed, all on this day.
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Library of Congress
1852: John Harvey Kellogg, an American physician and health-food pioneer whose development of dry breakfast cereals with his brother William K. Kellogg was largely responsible for the creation of the flaked-cereal industry, is born in Tyrone, Mich.