Obama lauds formerly homeless teen at science fair

Two weeks after attending the State of the Union address, formerly homeless teen Samantha Garvey was back in Washington, D.C. Tuesday, where she displayed her scientific acumen — and got a shout-out from the president.Garvey, 18, a Long Island, N.Y. science whiz, garnered national headlines when she became a semifinalist in the Intel Science Talent Search while she and her family were living in