Polluted air and rivers have acute local health effects and changing rainfall and temperature patterns cause global disruptions in supplies of food and clean water. Learn what is being done to mitigate the impact.
(Photo by Hammer & Tusk/Unsplash)
The smoke plume from the fast-moving Woolsey Fire encroaching on Malibu on Nov. 9, 2018, as residents evacuate along the Pacific Coast Highway. (Cyclonebiskit/Creative Commons)