Olympic Diving Tank Turns Green

That's not how the pool is supposed to look...

August 10, 2016
Green Diving Pool

The Rio Olympics have had their issues, like any major international event. But this one has officials stumped.

The water in the diving pool was clear blue on Monday, and mysteriously turned green by Tuesday, and the color got darker through practice and competition.  The water in the water polo pool, which is right next to the diving pool, was still blue. 

Green diving pool

Officials insist the green water didn't pose any risks for the athletes, but they can't say for sure why it turned that color in the first place.