Rio 2016
The doctors, professors and scientists fear the Games will help Zika spread around the globe.
The world's fastest man seems to have spoken regrettably quickly here.
Russia's track and field athletes have been banned from competing.
"You’ll be putting your life at risk here.”
WHAT'S HAPPENING
Who's cutting onions?
The gesture aims to show solidarity with refugees worldwide.
These groups are working to protect the rights of children affected by major sporting events.
The spike in cost coincides with Brazil's worst recession in years.