National Geographic Explorer
National Geographic Explorer (or simply Explorer) is an American documentary television series that originally premiered on Nickelodeon on April 7, 1985, after having been produced as a less costly and intensive alternative to PBS's "National Geographic Specials" by Pittsburgh station WQED. The first episode ("Herculaneum: Voices from the Past") was produced by WQED and featured long-time "Explorer" cameraman Mark Knobil, who is the few staff members with the franchise during all 24 seasons. The program is the longest-running documentary television series on cable television. Presented every Sunday from 5:00 pm to 8:00 pm, the  original series was three hours in length, containing five to ten short films. Although the National Geographic Society had been producing specials for television for 20 years prior to "Explorer", the premiere of the series required an increase in production from 4 hours of programming a year to 156 hours. Tim Cowling and Tim Kelly were the executive producers for the series during this transition. In its 36 years on television, "Explorer" has worked for five television outlets. In February 1986, "Explorer" moved to TBS, where it had a successful run until September 1999, when it moved to CNBC. In  October 2001, the series moved to MSNBC. In June 2003, the series was relaunched on MSNBC as "Ultimate Explorer", with Lisa Ling as the host. On July 8, 2004, "Explorer" joined the National Geographic Channel. "National Geographic Explorer" has earned more than 400 awards, including 52 Emmy Awards, 13 Cable ACE awards, the Family Television Award, the Genesis Award, the DuPont-Columbia Silver Baton Award, the Peabody Award, four gold medals at the International Film and Television Festival of New York, as well as being nominated for two Academy Awards. The original Explorer series ended in 2011 and then was  started again in 2015 with the help of original programming president Tim Pastore, hosted by British journalist Richard Bacon, with executive producers Lou Wallach, Jeff Hasler and Brian Lovett. The series is broadcast on National Geographic's 171 channels around the world. In 2018, Bacon was replaced by Phil Keoghan who is best known for hosting "The Amazing Race". Plot / Format. Variety magazine described the series: "The new-model 'Explorer' is described as a weekly 'docu-talk' series that will feature magazine-style field reporting, celebrity guests and talk show segments shot in front of a studio audience." Background. "National  Geographic Specials" were being produced by Pittsburgh station WQED for PBS. History. "National Geographic Explorer" began broadcasting in April 1985 on Nickelodeon. The following year, the show moved to TBS. Each episode was made by an independent production company with a National Geographic staffer serving as an associate producer. Local actor Bingo O'Malley was selected by "Herculaneum: Voices from the Past" producer Joe Seamans as host. "Herculaneum" was extended for broadcast on PBS in 1987 under the title, "In the Shadow of Vesuvius". The show bounced between CNBC (which was subject to interruptions in the fall and late spring/early  summer due to World Series and NBA Finals postgames from NBC Sports), then MSNBC and finally National Geographic Channel. In April 2010, the show celebrated its 25 year with a special, "Explorer: 25 Years". Episodes. Episode list starting with the change in title to simply "Explorer"