BBC Sport's Nick Hope looks at Rio de Janeiro's Olympic preparations 18 months from the Games.
Researchers in Brazil discover "super-bacteria" in the sea waters where sailing and windsurfing events will be held during the 2016 Olympics.
British double Olympic champion Charlotte Dujardin sets a new world record as she wins Grand Prix gold with Valegro at Olympia.
Cathy Freeman's bodysuit worn when she lit the Sydney 2000 Olympic flame may have been found after 14 years.
Drug cheats in sport face a minimum four-year ban - up from two years - under new rules which came into effect from 1 January.
Boston is put forward by the United States Olympic Committee as a candidate city for the 2024 Olympic and Paralympic Games.
Young Sailor of the Year Emma Wilson is following in the family windsurfing tradition as she makes her mark.
Britain's Jessica Ennis-Hill to contest her first heptathlon since winning gold at London 2012 in May's Hypo-Meeting.
Judd Trump says an Olympic gold medal would be a better achievement than winning the World Championship.
Water pollution in the sailing venue is the main concern for Rio de Janeiro, 18 months before the city stages the Olympics.
Milen Dobrev, a weightlifting gold medallist at the Athens Olympics in 2004, is found dead at his home, aged 35.
Tom Daley swaps his "demon dive" for a new "firework" routine as he attempts to win gold at the 2016 Rio Olympics.
Rio de Janeiro is making "solid progress" towards the 2016 Olympics - despite dead fish being discovered at the sailing venue.
British sailors take supplements to "strengthen their gut" over fears of the water quality at the Rio 2016 Olympics.
The Football Association is planning to enter men's and women's Great Britain teams at the Rio 2016 Olympic Games.
FAW president Trefor Lloyd Hughes criticises plans to enter men's and women's Great Britain football teams in the Rio Olympics.
The Scottish FA is firmly against the idea of Great Britain football teams competing at the Rio Olympics in 2016.
Tickets for football and athletics are proving popular, but there is one Olympic sport trumping the rest in popularity.
Basketball's high participation may help it receive a financial boost as part of UK Sport's new funding strategy.
Britain's men's and women's football sides will not participate at the 2016 Olympics without Fifa permission, BBC Sport learns.