As the Lincoln Reflecting Pool turned green with algae, officials are now using chemicals to fix it.

Q: I got home from work last night and couldn’t wait to get into my pool to soak away the day, but when I got to the backyard, the pool water was green—not light green, either, but dark. I didn’t even get in! Why is my pool green? A: It’s an ...

An aerial photo taken by a passenger of a commercial plane descending into Washington, DC, this week captured several ongoing renovations across the city. The photo taken June 16, shows the algae-ridden Lincoln Memorial Reflecting Pool,