Q: I got home from work last night and couldn’t wait to get into my pool to soak away the day, but when I got to the backyard, the pool water was green—not light green, either, but dark. I didn’t even ...

Forbes contributors publish independent expert analyses and insights. GrrlScientist writes about evolution, ecology, behavior and health. But surely, the water in the swimming pools is safe, right?

Dear Mary Williams-Neal Community Center Pool kids: I feel you. Green pool water. Yuck! (June 27, 2A, “This KC community pool closed after turning bright green. Here’s why & when it’ll reopen”) A ...

The "radical measure" followed failed attempts to clean the kale-colored water, which a Rio spokesman maintained posed no risk to the health of the athletes. By The Associated Press Olympic_Diving_Rio ...

RIO DE JANEIRO, Aug. 13 (UPI) --A spokesman for the Olympic Games in Rio said the reason the swimming and diving pools at the aquatic venue turned green was the mistaken addition of hydrogen peroxide ...

The transformation of pool water from blue to green at the Olympics in Rio de Janeiro resulted in some speculation on the cause that often centered around algae. But N.C. State University chemistry ...

The saga of the water in the diving and water polo pools at the Maria Lenk Aquatics Center in Rio de Janeiro is, shall we say, a very colorful tale. When the Olympics began on Aug. 5, the pools were ...

A family exploring in the Israeli desert stumbled across an old pool and decided to take a plunge, despite the color of the water. Simcha Sher, a 31-year-old native of Upstate New York who now lives ...

Rio officials are draining the green Olympic diving pool, perhaps bringing an end to the biggest, oddest mystery of the games. The water in the Maria Lenk Aquatics Center mysteriously turned green ...