Bids for the 2018 Summer Youth Olympics IOC Executive Board selected three candidate cities. On August 30, 2011 Buenos Aires and the Argentine Olympic Committee announced that they will bid for the 2018 Summer Youth Olympic Games. Buenos Aires bid to host the 1956 and 2004 Summer Olympics but lost to Melbourne and Athens respectively. On September 19, 2011, it was announced that Glasgow would submit to the British Olympic Association (BOA) a proposal to bid for the 2018 Summer Youth Olympics. Glasgow hosted the 2014 Commonwealth Games. The city has never made an Olympic bid before. On February 22, 2012 the BOA agreed to put Glasgow
Summer Olympic Games federal government; the country's economic crisis; health and safety concerns surrounding the Zika virus and significant pollution in the Guanabara Bay; and a state-sponsored doping scandal involving Russia, which affected the participation of its athletes in the Games. Tokyo, Japan will host the 2020 Summer Olympics, making it the first Asian city to host the Olympic Games twice. Forty-two sports, spanning 55 disciplines, have been part of the Olympic program at one point or another. Twenty-eight sports have comprised the schedule for three of the recent games, 2000, 2004, and 2008 Summer Olympics. Due to the removal of baseball and