Professor Avi Loeb is a theoretical physicist whose areas of professional interest include cosmology and astrophysics. His new book, "Extraterrestrial: The First Sign of Intelligent Life Beyond Earth", proposes that 'Oumuamua, the interstel...

Dr. Mark Gordon is an expert in the field of neuroregenerative medicine and the treatment of Traumatic Brain Injuries. SFC Andrew Marr is a Green Beret, co-founder of the Warrior Angels Foundation, and author of "Tales from the Blast Factor...

Ira Glasser is a former director of the American Civil Liberties Union and a lifelong defender of every citizen's right to free speech. He is the subject of the 2020 documentary "Mighty Ira", available now on streaming video.

Justin Wren is a professional mixed martial artist, humanitarian aid-worker, and founder of Fight for the Forgotten: a non-profit benefiting the Mbuti Pygmy people of the Congo.

Brian Redban is a comedian, producer, and co-host of the podcast and live-streaming YouTube show Kill Tony, and founder of the Deathsquad podcast network.

Mark Smith is an airline pilot, mixed martial arts referee, judge, and trainer, and corporate health and wellness advocate. Prior to his career in the private sector, Smith served his country as an Air Force F-16 fighter pilot, with tours a...

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...

World Wrestling Entertainment Hall of Famer Mark "The Undertaker" Calaway is a thirty-year veteran of the sports entertainment industry, and widely considered one of the best professional wrestlers of all time. Now retired from the ring, hi...

Fahim Anwar is a stand-up comic, actor, and former aerospace engineer. In addition to starring in his own solo comedy special, "There's No Business Like Show Business" on available on YouTube, Anwar is also a founding member of the sketch c...

Ali Siddiq is a stand-up comic and writer who initially developed his comedic talents during a six-year stint behind bars. Now a successful headliner, Siddiq spends his time offstage volunteering to meet the needs of his Houston, Texas comm...

Francis Ngannou is a professional mixed martial artist competing in the heavyweight division of the UFC. When he's not busy training for his next fight, he works to empower the youth of his native Cameroon through the Francis Ngannou Founda...

Singer/songwriter Suzanne Santo is the lead vocalist and co-founder of HoneyHoney, as well as a solo artist who is currently at work on her second album. Gary Clark Jr. is a Grammy award winning singer, songwriter, and guitar player.

Tulsi Gabbard is a Former United States Representative, presidential candidate, and Iraq War veteran. Currently, she serves as the leader of Tulsi Aloha, a political action committee.

Terry W. Virts is a retired astronaut, International Space Station Commander, test pilot, and colonel in the United States Air Force. Virts spent over 213 days in space over the course of his career with NASA. His new book How to Astronaut:...

Scientist Lex Fridman researches human-centered artificial intelligence and autonomous vehicles at MIT, and is also the host of the Lex Fridman podcast.