Olympic Mystery: Why Did Rio's Diving Pool Turn Green?

When the water in Rio's Olympic outdoor diving pool turned bright green yesterday, people were baffled about what could have turned the water such an unusual hue. Now, Olympic officials are saying that extensive testing shows that a chemical imbalance caused by too many people using the water was the reason for the color change, the New York Times reported. A sudden decrease in the alkalinity in the pool was the main reason for the color change, Mario Andrada, a Rio 2016 spokesman, said Wed