National Geographic - Explorer: 25 Years (2015) 720p <br /> <br />National Geographic celebrates the 25th anniversary of Explorer, the longest running documentary series in cable television history, with a commemorative special. Explorer has taken viewers to more than 120 countries, opening a window on hidden parts of the world, unlocking mysteries both ancient and modern, and investigating amazing and powerful stories of science, wildlife, and human nature. <br /> <br />Hosted by Lisa Ling, the 25th anniversary special looks back at how the world has changed in a quarter century and how the award-winning Explorer series has chronicled our changing world.
