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 Games ceremony had bicyclists with dove-wings, lit by LEDs. In the 2014 ceremony several dancers, holding strands of blue LED lights, danced on the shape of a dove projected on the stadium floor. In the 2016 ceremony, children with dove shaped kites were seen running with the first Olympic Laurel winner, Kipchoge Keino. After each Olympic event is completed, a medal ceremony is held. The Summer Games would usually conduct the ceremonies immediately after the event at the respective venues, whereas the Winter editions would present the medals at a nightly victory ceremony held at a medal plaza, excluding the most of