International Ski Federation (FIS) recognized freestyle skiing as a sport in 1979 and brought in new regulations regarding certification of athletes and jump techniques in an effort to curb the dangerous elements of the competitions. The first FIS Freestyle Skiing World Cup was staged in 1980 and the first FIS Freestyle World Ski Championships took place in 1986 in Tignes, France. Freestyle skiing was a demonstration event at the 1988 Winter Olympics in Calgary. Mogul skiing was added as an official medal event at the 1992 Winter Olympics in Albertville, and the aerials event was added for the 1994 Winter Olympics in Lillehammer. In 2011, the International Olympic Committee (IOC) approved both halfpipe and slopestyle freeskiing events to be added to the 2014 Winter Olympics in Sochi, Russia.