Ben Hansen Talks Discovery+’s UFO Witness January 20, 2021 Den of Geek: Join us live as our UFO expert Alejandro Rojas interviews former federal agent turned paranormal investigator Ben Hansen, host of the new series UFO Witness on Discovery+. Related Articles Open Minds UAP News: Ball Lightning Science with Dr. Karl Stephan Brandon Fugal: The Secret of Skinwalker Ranch Season 2 Interview