The topic of gender testing in sports has become a headline again. South African sprinter Caster Semenya became a news story when she went to Berlin and claimed the world championship in the 800, crossing the line at 1:55.45, two seconds faster than her nearest rival. She announced herself to the global press only a few weeks earlier at the African junior championships with what had been (until her race in Berlin) the fastest time in the world this year (1:56.72).A number of athletes and commen