Medieval Cities at Night: When Towns Literally Locked Themselves In Before Social Media: How People Found Each Other Online Croton Aqueduct: The Gravity System That Changed New York City Time Crystals, Fibonacci, and the Hidden Structure of Time Catskill Aqueduct: The Gravity-Fed Waterway That Transformed New York City Water System: How Cities Secure Clean Water at Scale How the Early Internet Was Nothing Like Today Why Cities Used to Catch Fire So Often in the Past How Electricity Actually Travels Through Power Grids Wireless Power Transmission Research in Finland: A New Chapter in Contactless Energy Laser Power Transmission: From Space to Earth The Hidden Code of the Etruscans: Unlocking the Secrets of Italy’s Forgotten Ancestors Photos: John Wayne and Ricky Nelson share a scene in Rio Bravo (1959) James Stewart and Dickie Jones James Stewart, Beulah Bondi and Guy Kibbee Added This Month: More Updates Random Movies: Friendly Persuasion (1956) The Man Who Shot Liberty Valance (1962) Rio Bravo (1959) Mr. Smith Goes to Washington (1939) The Big Country (1958) More Movies