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Chad Qian, 14, is the 2012 Raytheon MATHCOUNTS National Competition champion.
Watch a video about an original letter written by President George Washington, now on display in the Public Vaults of the National Archives, in Washington, D.C.
Meet the candidates of the GOP race for the presidential nomination (shown in alphabetical order)
In honor of Martin Luther King Jr. day, these photos celebrate the spirit of the civil rights movement. The historic photos show some important events in both the life of Martin...
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