After more than 30 years of investigating these arcane subjects, David finds his unique views and ideas gaining popularity. He has appeared on Fox-TV’s Sightings and Encounters, two NBC-TV specials, The Conspiracy Zone, and segments for the Discovery Channel, A&E, The Sci-Fi Channel, The History Channel, The Travel Channel and others. He is currently a co-star on the History Channel Show Ancient Aliens. This popular show is now in its seventh season and David journeys to Peru, Bolivia, Europe and Mexico for episodes of the show. David also appeared in the Canadian television show Weird of What?, hosted by William Shatner, in its 2011-2012 season. He is also a frequent guest on nationally syndicated radio shows. He continues to explore, write and excite people about discovery through his magazine, World Explorer Club, and his publishing company, Adventures Unlimited Press. When not traveling, he divides his time between his homes in Illinois and Arizona.