Rio Olympics officials said they have finally solved the mystery of why the waters in two competition pools turned emerald green this week.
After days of leaving officials and spectators bewildered — and kind of grossed out — officials said Saturday a contractor had mistakenly dumped 160 liters of hydrogen peroxide into the water.
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The hydrogen peroxide then had an adverse reaction with the chlorine in the water, neutralizing the chlorine and allowing “organic compounds” to grow, including algae.
Read the full story at BuzzFeed News by Salvador Hernandez