How and why algae clouded Trump's vision for an 'American flag blue' Reflecting Pool
National Park Service employees use a vacuum pump to clean algae off the bottom of the newly repainted Lincoln Memorial Reflecting Pool on Tuesday. Ch…
Pool
Why did the newly refurbished Reflecting Pool turn green? The quiz knows
From left: Barack Obama, Lionel Messi, California first partner Jennifer Siebel Newsom. Pablo Martinez Monsivais, Pool/AP; Juan Mabromata/AFP via Gett…