This talk features a look at the history and use of fire in the world. It is a 2015 TED talk presented by Stephen Pyne to introduce his fire research to participants in the 14th Biennial Greater Yellowstone Ecosystem Conference in Big Sky Montana on Sept. 14-17, 2018.  Stephen was the AUBREY L. HAINES LECTURE award winner to present a conference keynote lecture. This TED talk covers fire use and change in its use over millennia and questions how future fire use will look.