Devon Bidal, "Investigating Ice Age America's Ancient Abattoir," Hakai Magazine (March 2, 2022).

Irene Fattacciu, "The Chocolate Route," Aeon (January 18, 2022).

  Matthew Shaer, "A Secret Tunnel Found In Mexico May Finally Solve The Mysteries Of Teotihuacan," Smithsonian (June 2016).

  Helen Thompson, "Genome Analysis Links Kennewick Man To Native Americans," Smithsonian (June 18, 2015).

  David Zax, "Ancient Citadel," Smithsonian (May 2008).

"First City In The New World?," Smithsonian (August 2002).