358: Rewriting the Peopling of the Americas: A Genetic Journey Through Time
Subscribe to the "Getting Unstuck – Cultivating Curiosity" podcast.
Guest
Jennifer Raff is an Associate Professor of Anthropology at the University of Kansas. She works with Indigenous communities and tribes across North America who wish to use DNA as a tool for investigating questions of recent and more distant histories. Her first book, “Origin: A Genetic History of the Americas,” is a New York Times bestseller and has won multiple awards, including the Phi Beta Kappa book award in science. In 2024 she was awarded a Guggenheim Fellowship (General Nonfiction) to support work on her second book.
Why This Episode Matters
Professor Raff discusses how genetic evidence has changed our understanding of the peopling of the Americas. Rather than a simple crossing of the Bering Land Bridge 13,000 years ago, DNA research suggests a more complex story involving population isolation during the Last Glacial Maximum (26,000-20,000 years ago), followed by multiple migration waves. Recent discoveries, like footprints at White Sands dating to 25,000+ years ago, continue to challenge existing theories.
Three Important Takeaways
Genetic evidence shows the ancestors of indigenous Americans descended from an isolated East Asian population that experienced gene flow with ancient North Siberians around 25,000 years ago.
Beringia wasn't just a narrow "land bridge" but a lost continent twice the size of Texas, with its southern coast relatively habitable during the Last Glacial Maximum.
Research in this field requires a multidisciplinary approach that respectfully incorporates indigenous knowledge and perspectives alongside scientific methods.
Referenced
Origin: A Generic History of the Americas
https://anthropology.ku.edu/people/jennifer-raff
About Jeff
Jeff Ikler is the Director of Quetico Leadership and Career Coaching. “Quetico” (KWEH-teh-co). He works with leaders in all aspects of life to identify and overcome obstacles in their desired future. He came to the field of coaching after a 35-year career in educational publishing. Prior to his career in educational publishing, Jeff taught high school U.S. history and government.
Jeff has hosted the “Getting Unstuck—Cultivating Curiosity” podcast for 5 years. The guests and topics he explores are designed to help listeners think differently about the familiar and welcome the new as something to consider. He is also the co-host of the Cultivating Resilience – A Whole Community Approach to Alleviating Trauma in Schools, which promotes mental health and overall wellness.
Jeff co-authored Shifting: How School Leaders Can Create a Culture of Change. Shifting integrates leadership development and change mechanics in a three-part change framework to help guide school leaders and their teams toward productive change.
Show Credits
"Getting Unstuck" is commercial-free. It’s brought to you by Jeff Ikler, his amazing guests, and Neil Hughes, the best engineer a podcaster could ask for.
"Getting Unstuck" theme music: Original composition of "Allegro ben ritmato e deciso" by George Gershwin. Arrangement and recording courtesy of Bruno Lecoeur.