Algae Is Turning the Reflecting Pool Green. Again.

Algal blooms have returned to the Reflecting Pool in Washington, D.C., causing the water to turn green. The blooms have appeared despite a recent $14.2 million repair project at the site. Located between the Lincoln Memorial and the Washington Monument, the pool is a popular tourist destination. The reappearance of the algae is an unwanted development for the National Park Service, which manages the site.

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