Why is newly renovated Reflecting Pool in Washington DC full of algae?
The Lincoln Memorial Reflecting Pool in the US capital has turned green with algae days after it was refilled with water following renovations.
President Donald Trump ordered the revamp last year, claiming the pool had been left in a poor condition by President Joe Biden.
It's had issues with algae for decades. BBC Verify's Jake Horton has looked into what's behind the latest problem.
Produced by Ian Aikman, graphics by Leo Scutt-Richter
Related Stories
Canada
Albertans head to polls in historic referendum on whether they want to stay in Canada
5 days ago
Canada
In the news today: four soldiers killed, Alberta referendum, AI privacy fears
5 days ago
Canada
How a grass fire at a Canadian military base killed four soldiers
5 days ago
Canada
How will household electricity rebate reduction, temporary winter pricing change impact Ontarians?
5 days ago
Canada
Residents told to boil tap water due to bacteria
5 days ago
Canada
Oil
5 days ago
Canada
Albertans vote on path to independence as Carney fights to keep Canada united
5 days ago
Canada
Two of 4 soldiers killed in fast
5 days ago