Watch Wednesday, February 25, 2015 at 9pm | Examine Hagia Sophia’s seismic secrets, which have insured its survival through a dozen earthquakes.

Watch Wednesday, February 18, 2015 at 9pm | Follow an archaeologist and sculptors to learn how the people of Petra built their city of stone.

Watch Wednesday, February 11, 2015 at 9pm | Watch a team re-create a lifting machine and trap-door system to release a wolf into the Colosseum.

Watch Wednesday, January 28, 2015 at 9pm | Investigate what it’s like to have your world vanish beneath your feet.

Watch Wednesday, January 21, 2015 at 9pm | Follow the epic operation to secure, raise and salvage the Costa Concordia cruise ship.

Watch Wednesday, January 14, 2015 at 9pm | Watch as CERN scientists prepare to restart the history-making Large Hadron Collider.

Watch Wednesday, January 7, 2015 at 9pm | Discover the technologies that make drones so powerful, propelling us toward a new chapter in aviation history.

Watch Wednesday, December 17, 2014 at 9pm & 10pm | Making stuff colder, faster, safer & wilder with host David Pogue.

Watch Wednesday, December 3, 2014 at 9pm | View an intimate portrait of Neil Armstrong, the first person to set foot on the moon.