What is the Athlete Biological Passport?

Doping scandals threaten the Olympic Movement, and the public, even some athletes and sports organisations, have lost faith in the anti-doping system. How can the Athlete Biological Passport (ABP) help with this? How can it be further improved? What does the future look like for anti-doping? This month's AISTS Sports Medicine Podcast with Thomas Roos and Andrei Krasilnikau attempts to answer these questions.