For the first time ever in Olympic history, a double-amputee is set to race alongside able-bodied athletes. Nicknamed "Blade Runner," South African sprinter Oscar Pistorius's remarkable achievement is set to raise as much enthusiasm as it will concern.

As the London 2012 Olympics get set to start next week, experts and fans alike are anticipating a showcase of seemingly greater-than-human performances. But with the strict prohibition against performance-enhancing drugs and gear, some sports pundits are predicting that few records will be broken — and that…

South African sprinter Caster Semenya created a stir a few years back on account of her "intersexed" characteristics — prompting some to demand that sporting authorities screen for these sorts of biological anomalies in the name of fairness. But a Stanford University School of Medicine bioethicist and her colleagues now …