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
Olympic Stadium figure skating and short-track speed skating during the 2012 Winter Youth Olympics. Stockholm Olympic Stadium hosted equestrian events for the 1956 Summer Olympics (while the 1956 games were held in Melbourne, Australia, quarantine restrictions prevented equestrian events from being held domestically, thus Stockholm, Sweden hosted the 1956 equestrian competitions). Olympic Stadium Olympic Stadium is the name usually given to the main stadium of an Olympic Games. An Olympic stadium is the site of the opening and closing ceremonies. Many, though not all, of these venues actually contain the words "Olympic Stadium" as part of their names. Olympic Stadium may also