Razib discusses revolutionary new work published in Nature that tells us that modern humans were present in the Americas 32,000 years ago with one of the authors, Lorena Becerra-Valdivia.

https://www.nature.com/articles/d41586-020-02190-y

https://www.nature.com/articles/s41586-020-2509-0

https://www.nature.com/articles/s41586-020-2509-0