NPR News Quiz: Why Did the Reflecting Pool Turn Green?

Washington D.C.'s Reflecting Pool, that long mirror of water at the heart of the National Mall, turned an unmistakable shade of green shortly after completing a major refurbishment — a small disruption that opened larger questions about institutional stewardship. The incident, visible to millions of visitors who come to see themselves reflected in its waters, forced a public reckoning with how federal agencies oversee the maintenance of the nation's most symbolic spaces. When a landmark so woven into the ceremonial fabric of a nation falters, even briefly, it asks something of those entrusted