The 100th anniversary of the Tour de France has been going on for a week now - the first Tour since Lance Armstrong admitted to doping over the course of his career.

Since the admission riders have come out against performance enhancing drugs and anti-doping authorities have claimed that the sport is cleaner than it was back in the so called dark days.

But Outside Magazine contributor Brian Alexander doesn't think it's much better - he recently wrote about some new ways that cyclists could be doping.