Shanna Swan is an environmental epidemiologist whose work examines the impact of chemical exposure on reproductive health and child development. Her book, "Count Down", is available now.

Matty Matheson is a chef and author. He's the host of the YouTube series "Just A Dash" and co-host of the "Powerful Truth Angels" podcast.

Dave Smith is a stand-up comedian and political commentator. He is also the host of the "Part of the Problem" podcast, and co-host of the "Legion of Skanks" podcast.

Josh Rogin is a journalist, political analyst, and author of "Chaos Under Heaven: Trump, Xi, and the Battle for the 21st Century".

Joe is joined by Stephen "Wonderboy" Thompson: a mixed martial artist currently competing in the Welterweight division of the UFC.

Gordon Ryan is a submission grappler and mixed martial artist currently signed to ONE Championship.

Jonathan Zimmerman is a professor of education and history at the University of Pennsylvania and author of "Free Speech and Why You Should Give a Damn".

David Holthouse is a writer and filmmaker whose investigation into a triple homicide in California's Emerald Triangle became the subject of the HULU documentary "Sasquatch".

Dave Chappelle is a comedian, actor, writer, and producer. He is the recipient of multiple honors, among them the Mark Twain Prize for American Humor, and several Grammy Awards. He's the co-host, along with Talib Kweli and Yasiin Bey, of "T...

Andrew Santino is a standup comedian and actor. He's the host of the "Whiskey Ginger" podcast and co-host of the "Bad Friends" podcast with Bobby Lee.

Ethan Suplee is an actor and host of the "American Glutton" podcast.

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Jacques Vallée is a venture capitalist, technologist, and world-renowned figure in the field of unidentified aerial phenomena. James Fox is the director of The Phenomenon: a new documentary about UFOs and a global effort to conceal their ex...

Filmmaker Bryan Fogel's "Icarus" won the Academy Award for Best Documentary Feature in 2018. His newest documentary, "The Dissident", is an investigation of the death of Saudi Arabian "Washington Post" journalist Jamal Khashoggi, murdered a...