In a rebroadcast from March 6, 2011, Keith & Russ talk with Vance Holliday of the Departments of Anthropology & Geosciences at the University of Arizona. Holliday tells us about the Clovis people and other early civilizations in the American Southwest, and how soil sediments can help us decipher the past.
Part 1 of a 2-part interview.
Aired July 26, 2015.