Algae has turned the Lincoln Memorial Reflecting Pool green again, days after its $14.8 million makeover. Take a look.

How and why algae clouded Trump's vision for an 'American flag blue' Reflecting Pool

Trump's Reflecting Pool renovation turned green with algae within days—darker paint heat-triggered biological breakdown. For tech leaders: infrastructure projects fail when design ignores environmental factors; recovery required nanobubble ozone tech rather than prevention.