Images of the Lincoln Memorial Reflecting Pool show that green algae have returned to the site on the National Mall despite President Trump’s renovations.  The project, which cost more than $13 million, included the addition of nanobubbler technology that has “successfully destroyed the algae,” according to the Interior Department.  A spokesperson told The Hill that…

Algal blooms have hit the site, between the Lincoln Memorial and the Washington Monument, after a $14.2 million repair project.

© Alex Kent/The New York Times