Streets in Southern California were painted red this week as planes continue to fly overhead dropping red clouds over burned areas. But why is it red?

The red retardant Phos-Chek is being used by authorities to combat fires in Los Angeles. What's it made of and how does it work?

Crews battling the deadly ongoing Los Angeles wildfires have started dropping bright pink fire retardant known as Phos-Chek from the skies to combat the stubborn flames. The eye-catching flame retardant — seen in photographs coating homes,