History HD A Boeing 777 crash-lands into the San Francisco Airport with no warning, leaving everyone baffled; as engineers race to figure out what happened, they turn to other disasters to unveil the complicated relationship between humans and machines. 2026-04-02 From World War II bombs pulled from the sea and Nazi bunkers buried in sand, to chemical weapons hidden beneath Washington, D.C., and a supernova caught on camera - these explosive discoveries prove that history's blasts from the past can still shake our world today. 2026-04-02 Exploring some of the most valuable treasures found in the most unlikely of ways, like a priceless Ancient Roman mosaic hiding in a New York City apartment, or the most valuable piece of Americana tucked away in a $4 flea market find. 2026-04-02 From priceless treasure found inside a lost city, to an ancient manuscript hidden behind a wall, explores mysterious secrets lost deep inside various unseen chambers like tunnels, caves and burial sites. 2026-04-02 Secrets of popes, rewritten laws and cities lost to the waves are divine discoveries that shake our beliefs and uncover mysteries. 2026-04-02 Beneath the earth, frozen in the tundra, and hidden in the depths of the sea, lie some of the deadliest discoveries of all time; from an asteroid impact that nearly ended life on Earth to creatures once thought to be myths, and even a killer virus thawed from the ice, these shocking finds reveal the dark side of discovery. 2026-04-03