When Graham Hancock was on the Joe Rogan Experience, he talked about a variety of topics including the possibility of a comet hitting Los Angeles, the hypothesis of the great extinction that happened with North American land animals, his sequel to Fingerprints of the Gods, and the encounters with entities in the DMT state. Additionally, he mentioned his long excursion with Joe Rogan where they visited landscapes related to catastrophes and Graham's theories about a lost civilization in prehistoric times.

When Graham Hancock was on the Joe Rogan Experience, he mentioned that in the DMT state, people do encounter entities and these entities communicate with us. He also drew parallels between these encounters and the descriptions of aliens in modern UFO abduction accounts. Joe Rogan also mentioned Rick Strassman, who is known for his research on DMT. Unfortunately, due to health issues, Rick was unable to appear on the show at the time. But both Joe Rogan and Graham Hancock praised Rick's brilliance and importance in the field. (Transcript: "But the other issue of entities, the encounters with entities, anybody who's smoked EMT will know that, as I have as you have, that will know that you do encounter entities in the DMT state. And they do communicate with us. And there's a lot of parallels with the ETs or the aliens as they're described in modern UFO abduction accounts.")