Alberto Contador, winner of this year's Tour de France, tested positive for a banned substance during the race. The cycling superstar says he was a victim of food contamination.
Panrit Daoruang, popularly known as ‘Gor,’ once blogged about his life as a teen drug addict. Now he crusades about prison overcrowding and helps fellow inmates.
The Scottish rider, once banned from the sport for two years for doping, now competes with a team pioneering a new drug-testing model.