WATCH: Cavemen Explain Fossil Fuels [Fiore Cartoon]

Ogg and Ugg illustrate the pain caused by fossil fuels and emissions.

Mark Fiore is a Pulitzer Prize-winning editorial cartoonist and animator whose work has appeared in the Washington Post, the Los Angeles Times, the San Francisco Examiner, and dozens of other publications. He is an active member of the American Association of Editorial Cartoonists, and has a website featuring his work.