More than 30% of athletes competing at the 2011 World Championships admit to using banned substances during their careers, according to a Wada-commissioned study.
American middle-distance runner David Torrence is found dead in a swimming pool in Arizona at the age of 31.
As Mo Farah signs off with another victory in the Diamond League final in Zurich, we take a look back at his illustrious track career.
Gabby Logan introduces highlights from the 13th leg of the 2017 Diamond League series in Zurich.
BBC Sport brings you highlights of the final Diamond League event of the season in Brussels.
Key info
London: 4-13 August
Great Britain's Mo Farah wins a thrilling 5,000m in the final track race of his career at the Diamond League event in Zurich.
Former USA sprinter Sanya Richards-Ross believes she has helped other women by revealing she had an abortion before the Beijing Olympics.
Disappointments but great excitement and record-breaking crowds, the London World Championships were a success, says Tom Fordyce.
BBC pundits analyse how Usain Bolt's career ended in heartbreak after the Jamaican pulled up injured in his final race in the men's 4x100m relay final at the World Athletics Championships.
As eight-time Olympic champion Usain Bolt prepares to retire, we analyse the numbers that cement his "legend" status.
Russian long jumper Darya Klishina tells BBC Sport about competing in Rio 2016 and as a 'neutral' athlete at London 2017.
Usain Bolt's status remains undiminished despite Justin Gatlin snatching 100m victory on a surreal night at London Stadium, writes Tom Fordyce.
After being inspired by London 2017, find out how to join in one of the Team Personal Best events around the UK.
Follow GB rowing star Katherine Grainger's five-step guide to taking part in your local parkrun.
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For more ideas, information and inspiration, visit bbc.co.uk/getinspired
