Throughout more than 120 years of Olympic history, no city has hosted both the winter and summer games. Now, Beijing will be the first do it -- and in the span of just 14 years.
- IOC mulls Rio's dirty water, Tokyo emblem flap
- WHO, sailing body seek virus tests in Rio waters
- Ruffini wins 25-km open water gold at worlds
- Athletes: Rio water will not alter Olympic plans
- Triathletes shrug off water warnings, swim in Rio
- Lausanne gets 2020 Winter Youth Olympics
- Ex-America's Cup sailor sues Oracle Team USA