Researchers analyzing artifacts from Oregon’s Great Basin say they may have identified the world’s oldest sewn material, dating back about 12,000 years, offering new insight into early human technology.

Underground History host Chelsea Rose talks with Beth Lew-Williams about her book and the research behind it.

Chelsea Rose, host of Underground History, looks at the impact of a railroad that once linked southern Oregon and northern California over the Siskiyou mountains.

Underground History host Chelsea Rose visits with "The Oregon Trail" Game Designer R. Philip Bouchard and Underground History Producer Charlie Zimmerman.

Ana Maria Spagna and Eric Gleason join host Chelsea Rose on an investigative journey into a historic rumor, or true crime.

Underground History host Chelsea Rose visits with Nate Pedersen, author of "Pseudo Science: An Amusing History of Crackpot Ideas and Why We Love Them."

Daily Beast columnist, award-winning author and renowned cocktail historian discusses his new book, "The Comic Book History of the Cocktail: Five Centuries of Mixing Drinks and Carrying On," and graphic novel history illustrated by comic artist Dean Kotz.

Klamath Tribal Cultural and Heritage director Perry Chocktoot and archaeologist Richie Rosencrance join Chelsea Rose to discuss an article they co-authored with Kelly M. Stewart titled, "Collaborative Understanding: Using Archaeology, History, and Indigenous Knowledge to Support Elk Conservation in Oregon’s Great Basin."

Chelsea Rose visits with Dr. Chris Merritt to discuss his recent lobbying of Congress

Archer Mayo joins host Chelsea Rose on Underground History.