Tennis star Rafael Nadal says he's going to sue the former French minister of health and sport, Roselyne Bachelot, who suggested he missed matches in 2012 because he failed a drug test. The comments follow the admission by another tennis star, Maria Sharapova, last week that she had indeed tested positive for a banned substance.
The World Anti-Doping Agency (WADA) is meeting this week to discuss what do do about drug use by athletes. Here & Now's Robin Young checks in with BBC Sport correspondent Alex Capstick to gauge the breadth of the problem.
This segment aired on March 15, 2016.