LINDA WERTHEIMER, HOST:
And if there weren't enough excitement at the Olympics, another kind of record was made yesterday at the Olympic Stadium. A double amputee with artificial legs raced for the first time ever in the Olympics. South African Oscar Pistorious qualified for the semifinals tonight in the 400-meter sprint.
NPR's Howard Berkes reports from London.
HOWARD BERKES, BYLINE: The first heat of the Olympic 400 sounded like any other race.
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UNIDENTIFIED MAN: From the inside...