The race to de-greenify the Reflecting Pool continues, as National Park Service workers were seen dumping bottles of hydrogen peroxide into the pool Tuesday morning. Algae first appeared in the pool last week shortly after its reopening,

It has been 14 years since the overhaul of the Washington D.C., reflecting pool was finished. It was the first time in 90 years that the reflecting pool was repaired, and a more cost-effective way to bring water into it was developed.