Science Channel HD Atlanta's Mercedes-Benz Stadium, the world's most advanced stadium, features the most complex retractable roof ever built; the team races to finish the $1.6 billion arena for the NFL season. 2026-08-13 In Barcelona, Spain, the Sagrada Família has taken more than 140 years to build; today, engineers are nearing completion of the world's tallest church, designed by maverick architect Antoni Gaudí. 2026-08-13 Engineers are breaking records as they build Beijing's tallest skyscraper, a 1,500-foot-tall behemoth designed to withstand one of the world's most dangerous earthquake zones. 2026-08-13 The most cutting-edge venue in the world, Atlanta's Mercedes-Benz Stadium, hosts the greatest athletes in the world, and engineers show how this state-of-the-art arena was designed and constructed. 2026-08-13 In Barcelona, Spain, the Sagrada Família has taken more than 140 years to build; today, engineers are nearing completion of the world's tallest church, designed by maverick architect Antoni Gaudí. 2026-08-13 Engineers are breaking records as they build Beijing's tallest skyscraper, a 1,500-foot-tall behemoth designed to withstand one of the world's most dangerous earthquake zones. 2026-08-13 The most cutting-edge venue in the world, Atlanta's Mercedes-Benz Stadium, hosts the greatest athletes in the world, and engineers show how this state-of-the-art arena was designed and constructed. 2026-08-13 Atlanta's Mercedes-Benz Stadium, the world's most advanced stadium, features the most complex retractable roof ever built; the team races to finish the $1.6 billion arena for the NFL season. 2026-08-13 Engineers build a cutting-edge skyscraper in a busy area of New York City; this impossibly tall and thin tower must be built with a strange diagonal framework, posing unique challenges for some of the world's best builders. 2026-08-13 In Germany, engineers battle groundwater, tight spaces and complex logistics to build Frankfurt Airport's Terminal Three, a mega hub designed to handle 19 million passengers a year. 2026-08-13 A mysterious object is orbiting Saturn, and it looks just like the Death Star; new evidence might shed new light on the mysterious death of Yuri Gagarin, the first man in space; when a cutting-edge satellite vanishes, fears of a space war escalate. 2026-08-13 When NASA discovers something strange on Saturn's biggest moon, experts investigate if aliens feeding on the world's electric atmosphere could be the culprit; the disturbing evidence points to an apocalypse if these monsters ever make it to Earth. 2026-08-13 Spaceships powered by atomic bombs; artificial rings encircle an entire star; Neil Armstrong's transmission feed cuts off when he spots strange lights on the moon; how can lightning talk to itself. 2026-08-13 Quasars are the brightest and most powerful objects in the universe, and though they have shaped the cosmos, they might ultimately destroy everything that exists. 2026-08-13 Mercury is a deadly world, facing attacks from the Sun, comets, and other planets; even though it's the smallest planet in the solar system, Mercury has a dangerous secret that may one day threaten life on Earth. 2026-08-13 Our solar system hides a dark and violent past and new discoveries reveal that Earth and the planets were formed from the destruction of alien worlds that came before us. 2026-08-13 The disappearance of the SS Cotopaxi helped launch the legend of the Bermuda Triangle; a team of experts follows fresh leads with cutting-edge tech to investigate if a mysterious wreck off the coast of Florida is indeed the long-lost ship. 2026-08-13 When a sister ship of the Titanic gets embroiled in war with a hidden enemy, the former luxury liner is sent to the bottom of the ocean; new discoveries and cutting-edge underwater technology might finally reveal the secret history of its sinking. 2026-08-13 New evidence in the Bermuda Triangle could reveal that Nazis got closer to America than ever believed; using the latest cutting-edge underwater technology, experts investigate the truth behind the shipwreck that shouldn't exist. 2026-08-13 New discoveries reveal the treasures of a ghost fleet of Japanese ships at the bottom of the South Pacific, and using cutting-edge underwater technology, experts investigate a top-secret superweapon that could have changed the course of World War II. 2026-08-13 A cutting edge investigation into a deep-sea graveyard of 25 shipwrecks reveals the dark secrets of the biggest naval battle in history, and using the latest tech, experts follow new evidence into the mysterious abyss of long-lost battleships. 2026-08-13 A mysterious shipwreck at the bottom of Lake Erie could be the oldest wreck in America's most notorious ship graveyard, and using cutting-edge underwater archaeological methods, experts investigate new leads in this 200-year-old cold case. 2026-08-13 The remnants of a settlement in Nevada are interspersed with disintegrating machinery; experts uncover an abandoned mine where dreams of discovering a fortune were met with chaos and murder. 2026-08-13 An enormous concrete box with bizarre circular openings looms on the coast of an island near mainland China; experts investigate and uncover tunnels leading to an enormous underground complex that nearly triggered a nuclear war. 2026-08-13 A collection of ramshackle structures with a mystical facade lie mysteriously deserted on the tropical island of Bali; experts investigate and uncover the ruins of a bizarre amusement park complex with a disastrous past. 2026-08-14 The ruins of a dreamlike Polish palace hide an astonishingly dark history that's shrouded in mystery to this day; experts investigate and uncover an ornate gothic structure that concealed a nightmare of Nazi experimentation. 2026-08-14 A strange sea fortress that guards icy waters is home to a grim secret; experts investigate the mysteries at this eerie structure, which fought an invisible enemy far more deadly than ever imagined. 2026-08-14 A derelict beachside resort along the Black Sea is constructed upon deception and deep connections to the criminal underworld; experts investigate and uncover dark secrets behind a sprawling holiday complex constructed by the Russian mafia. 2026-08-14 The ruins of a dreamlike Polish palace hide an astonishingly dark history that's shrouded in mystery to this day; experts investigate and uncover an ornate gothic structure that concealed a nightmare of Nazi experimentation. 2026-08-14 A strange sea fortress that guards icy waters is home to a grim secret; experts investigate the mysteries at this eerie structure, which fought an invisible enemy far more deadly than ever imagined. 2026-08-14 A derelict beachside resort along the Black Sea is constructed upon deception and deep connections to the criminal underworld; experts investigate and uncover dark secrets behind a sprawling holiday complex constructed by the Russian mafia. 2026-08-14 A collection of ramshackle structures with a mystical facade lie mysteriously deserted on the tropical island of Bali; experts investigate and uncover the ruins of a bizarre amusement park complex with a disastrous past. 2026-08-14 A cutting edge investigation into a deep-sea graveyard of 25 shipwrecks reveals the dark secrets of the biggest naval battle in history, and using the latest tech, experts follow new evidence into the mysterious abyss of long-lost battleships. 2026-08-14 A mysterious shipwreck at the bottom of Lake Erie could be the oldest wreck in America's most notorious ship graveyard, and using cutting-edge underwater archaeological methods, experts investigate new leads in this 200-year-old cold case. 2026-08-14 A strange discovery by NASA's Mars Curiosity rover suggests the Red Planet was home to an alien nuclear war 300 million years ago; experts investigate if an extraterrestrial Armageddon transformed an Earth-like world into a wasteland. 2026-08-14 After Neil Armstrong's moonwalk, he leads an expedition into the Amazon to find a legendary library that holds all knowledge of an advanced alien civilization; experts ask if a close encounter on the moon's surface inspired Armstrong's quest. 2026-08-14 A NASA astronaut reports seeing a flying saucer in the skies above a U.S. Air Force test range; how the swirling gases of Saturn have formed a perfect hexagon that has hovered above the planet's pole for 30 years. 2026-08-14 If a massive asteroid collides with Earth, it could end life on the planet as one knows it; new discoveries reveal just how close civilization is to apocalypse and what it would take for the world's leading space agencies to stop it. 2026-08-14 Spacetime is the secret structure that controls our universe, and this strange four-dimensional substance controls time, light, and energy; it will also determine how our universe will end. 2026-08-14 Earth is hit by 100 tons of rock from space every day; most burn up in the atmosphere, but a single rock wiped out the dinosaurs. 2026-08-14 When a massive star dies, it can direct a blast of radiation that could obliterate all life. 2026-08-14 More than 100 million pieces of small space debris are floating around the Earth; a collision between two of these objects in low Earth orbit could be catastrophic. 2026-08-14 Aliens could be lethal killers who want to invade and plunder our world; a team of experts investigates extra-terrestrial beings and their threat to human life. 2026-08-14 Until recently, black holes were only theoretical; scientists know that millions exist and some of them have the potential to be lethal to earth. 2026-08-14 Experts discuss the many possible ways that could spark the beginning of the end for the universe, including when and why it would happen. 2026-08-14 A ghost ship appears overnight on the shores of Ireland; it may help shed light on the fate of vessels claimed by the most notorious patch of ocean on earth. 2026-08-14 Satellite images capture miles of aircraft precisely arranged in the vast Arizona desert; experts investigate the largest aircraft storage facility on Earth and the rotting remains of a defining moment in Cold War history. 2026-08-14 Aerial drone imaging captures a circular man-made structure that appears to be centuries-old in the remote forests of Aydin, Turkey; experts investigate a lost ancient amphitheater with a history steeped in gladiatorial bloodshed. 2026-08-15