Documents and interviews show efforts to drug athletes in the early 1980s.
Bolt joins American Justin Gatlin and Jamaican Yohan Blake.
For Almaz Ayana to shatter an impossible 23 year-old world record is either stunning or scandalous, depending on your level of cynicism.
Several of her opponents, including U.S. swimmer Lilly King, have taken shots at her.
John Anzrah allegedly gave urine in the name of one of his athletes.
He is as old as independent Ukraine itself and hopes to serve as a good example against prejudice.
The nation's Olympic Committee held a "critical" meeting with athletes in Rio.
Saudi Arabia said Joud Fahmy withdrew because of injuries, and not for political reasons.
All rowing was called off on day two due to inclement weather.
'I believe the Russian government has catastrophically failed its para-athletes. Their medals-over-morals mentality disgusts me,' IPC president says.
Day 2 is marred by weather after day 1 saw problems with security that left venues sparse.
Some athletes compete to virtually empty stands while spectators worry about spate of shootings, bomb scares.
College champion Thrasher, 19, clinches the women's 10M air rifle competition.
Favela residents express pride but exasperation at the contrast between the Olympics riches and their dire living situation.
Politics, partying and Parkour: How Brazil welcomed the world to Rio 2016.
Skateboarding will be a welcome breath of fresh air into the too-often elitist Games.
Around 169 million gallons of human waste flow into Guanabara Bay—the water-sport venue where Olympic athletes will be competing—every day.
The middleweight boxer is the cousin of Liverpool striker Robbie Fowler.
The exclusive prints are being sold in honor of the Rio 2016 Olympics and fuse Brazilian culture with Team GB.