The Havasupai Tribe in Northern Arizona has had to fight to hold onto its land in the Grand Canyon. And now tribal members are struggling to maintain their culture, too. Eight miles down into Havasu Canyon lives a medicine woman who is on a mission to save it.
Last month geologists published a paper in the journal Science that concluded the Grand Canyon -- or at least part of it -- is much older than most researchers think.
Flagstaff geologist Wayne Ranney discusses some new theories of how - and when - the Grand Canyon formed. The second edition of Ranney's book, Carving Grand Canyon, was recently released.
