The London Summer Olympics are already over for some athletes.
Bans for nine track and field athletes were announced this week after the athletes failed drug tests.
Anchor Aaron Schachter speaks with BBC Science correspondent Matt McGrath about efforts to keep drug cheats from competing at the Games.
The World is an independent newsroom. We’re not funded by billionaires; instead, we rely on readers and listeners like you. As a listener, you’re a crucial part of our team and our global community. Your support is vital to running our nonprofit newsroom, and we can’t do this work without you. Will you support The World with a gift today? Donations made between now and Dec. 31 will be matched 1:1. Thanks for investing in our work!