What science tells us about the algae bloom in the Lincoln Memorial Reflecting Pool

Algal blooms in the Lincoln Memorial Reflecting Pool in Washington, D.C., have long been a visible public nuisance.

When the pool turned green again on June 15, less than two weeks after President Donald Trump's US$14 million renovation, it sparked outrage, a rush to use chemical treatments and even claims of sabotage by "radical left lunatics." ...