It is without a doubt the biggest sporting event in the world, a competition unlike any other where dreams are made or broken in an instant.
This year the Brazilian city of Rio de Janeiro is hosting the summer Olympic Games.
A first for South America. There are more than 10,000 athletes competing in 306 different events, including a team entirely made up of refugees.
And their fans from the world will be watching and cheering.
But despite Brazil's colourful and carnival-like atmosphere, there have been controversies.
Are the Games worth all the trouble?
Presenter: Richelle Carey
Andrew Zimbalist - Author of 'Circus Maximus: The Economic Gamble Behind Hosting the Olympics and the World Cup'
Bryan Clift - Lecturer in the Department of Health at the University of Bath
Jeff Ruffolo - Director of Ruffolo Communications and author of the book 'Inside the Beijing Olympics'
Source: Al Jazeera