"Lectures in History" has a new time & channel! Watch at 8am & 8pm ET on C-SPAN 2. This weekend, professor Felix Harcourt talks about how conspiracy theories about UFOs have shaped American culture. "With this divorce from physical evidence, virtually any conspiracy theory is possible." https://www.c-span.org/video/?425446-1/20th-century-ufo-conspiracies | American History TV

The history of UFO sightings in North America goes back nearly 80 years. Explore the timeline of some of the most famous sightings and listen to testimonials from witnesses and the experts who dedicate their careers into uncovering the mysteries behind them. Solve the unknown in the brand new series, UFOs: Investigating The Unknown, Tuesdays at 8pm on National Geographic UK. | National Geographic UK