A journalist from California is caught in the wildfires in Patagonia, Argentina, at the same time L.A. faces the same ...

The trail of red clouds dropped over wildfires is known as Phos-Chek. This is a brand of long-term fire retardant. It has been used to fight fires since the 1960s, according to AccuWeather.

As fire crews and air tankers work to block the wildfires' explosive growth, images of red clouds of fire retardant falling onto trees are common. What is it — and what's in it?

Authorities battling a series of large wildfires in the Los Angeles area have employed a bright red fire retardant to tamp the flames, leading to dramatic images of the material blanketing scores ...

There was red fire coming up from below ... The expansive smoke cloud cast a shadow over the 5 Freeway and a nearby residential neighborhood. Evacuations were ordered as water-dropping aircraft ...

Days later, ominous red clouds were visible from the Getty Center in Brentwood, hovering on the horizon like a warning. The fire at the Villa was the closest flames had ever come to either building.

Images of vivid red clouds enveloping trees and scrubland prompt ... Air tankers and chemical fire retardants have been used since the 1950s, allowing firefighters to reach difficult spots.