Haunting Before-And-After Images Show Devastation of California Fires
What remains from the fires that broke out Jan. 7 is a charred landscape, filled with skeletal trees and blackened debris.
Nearly everyone in the world breathes bad air. This is what you can do to lower your risk.
Most of the world's population is exposed to polluted air, and for those living in cities with chronically bad air, the smog ...