More than 1,000 Russian athletes benefited from a state-sponsored doping programme for four years from 2011, a new report claims.
The Tongan Olympian who appeared topless and covered in oil at Rio 2016's opening ceremony wants to compete at the Winter Olympics.
British snowboarders Katie Ormerod and Billy Morgan finish on the podium at the Big Air World Cup in Monchengladbach, Germany.
British Olympic skeleton champion Lizzy Yarnold finishes fourth on her return to competition after more than 18 months out.
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Find out about Snowsport England's programme which aims to encourage people to take up snowsports.
How to get into Skiing
How to get into skiing - a full-body workout, guaranteed to get you fitter, with slopes and centres across the UK.
How to get into Adventure Snowsports
From skiing and snowboarding to ski jump and sledging, Get Inspired can help you get into Adventure Snowsports.
How to get into snowboarding
How to get into snowboarding - high-octane action in a sport you can take as seriously and make as complex as you like.
How to get into Speed Skating
How to get into Speed Skating - a longer, more endurance-based sport than its cousin, short-track skating.
Latest news and results from the official site.
What's on BBC Sport this week
This week's sport on the BBC includes England's fourth Test with India, heavyweight boxing and European Cup rugby.