With four days to go before the closing ceremony of the Beijing Olympics, only five athletes have tested positive for doping.
By comparison, 26 athletes were caught cheating at the Athens Games in 2004. And International Olympic Committee President Jacques Rogge had predicted that 30 to 40 athletes would fail doping tests during the 2008 Games.
To the optimists, this year's figure looks like progress.
But to the cynics -- and several anti-doping researchers -- it's an indication that the...Full Story