The $1.7 million “ozone nanobubbler” being used in an effort to make the Lincoln Memorial Reflecting Pool water crystal clear has a unique ability to shoot 500 million microscopic bubbles into every teaspoon of water.

President Trump's efforts to spruce up the Lincoln Memorial Reflecting Pool faced a snag this week, with algae turning the water green while rips appeared in an "American Flag Blue" surface picked by the president.

Trying to kill algae with chemicals is a common response when community ponds or other water features go green, but a freshwater ecologist says there may be safer and more effective solutions

The Lincoln Memorial Reflecting Pool was intended to reopen as a patriotic showpiece of Donald Trump’s Washington, D.C., beautification plan, with the bottom of the pool freshly coated in what he

About two weeks ago, President Donald Trump said work to restore the Reflecting Pool was finished. It has since turned green and paint is peeling.

As the nation prepares to celebrate its 250th, a major topic in Washington isn’t the meaning of democracy but a shallow pool of water. Views on the Reflecting Pool, like many things, are shaped by politics.

A new, intensive plan to keep the Reflecting Pool on the National Mall clean is emerging after the Trump administration spent months trying to turn the iconic memorial sparkling blue at the behest of President Donald Trump.

Bulky “nanobubbler” machines were carted off ahead of a promotional event for President Trump’s Ultimate Fighting Championship birthday party.

Historical records show challenges at the Lincoln Memorial Reflecting Pool since the project design began.