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THREE MINUTE TEASER

  • Liquid Gases show

    Liquid Gases

    After the invention of artificial refrigeration, attention switched to creating colder refrigerants.

    (02:58)
  • Proving Ground show

    Proving Ground

    Men risk peril for fame in a spear-throwing contest.

    (03:17)
  • Ancient Mortar show

    Ancient Mortar

    Bryan Penprase discusses the uses of the ancient kivas and what was used for ancient mortar at Casa Rinconada.

    (03:13)
  • Cold Cases show

    Cold Cases

    Unforgivable terrain mixed with big city crime makes for a dangerous combination for the troopers.

    (00:59)
  • Creating Canals show

    Creating Canals

    In early 19th century America, the creation of canals made the transport of goods more efficient.

    (02:36)
  • Stonehenge “The Place Of Healing Theory”  show

    Stonehenge “The Place Of Healing Theory”

    Was Stonehenge the ‘Lourdes’ of its day? It’s an alternative idea that our expert Mike Parker Pearson thinks could be in...

    (01:50)
  • Special Effects Photography and CGI show

    Special Effects Photography and CGI

    Special Effects Photography and Computer Generated Images. How the jaw dropping effects were created – from the blink of a...

    (04:52)
  • Pestis Problem show

    Pestis Problem

    Medieval city sanitation conditions were non-existent and rodents spread Bubonic Plague.

    (02:57)
  • Monster Moves show

    Monster Moves

    A light house on the edge and a town on the brink of collapse, can they be save? Meet the removal men with a difference.

    (01:01)
  • Pigs show

    Pigs

    Bent on destruction, feral pigs have marched into communities and conquering the world! Can anyone fight off these relentless...

    (00:31)
  • The Tabulator show

    The Tabulator

    The tabulating machine counted data from punched cards and sped up the Census Bureau's work flow.

    (02:56)
  • Radical Project show

    Radical Project

    Here in Ennerdale, there’s a radical project underway to rip out the rows of regimented pines and restore this valley to its...

    (03:00)
  • Bikini Atoll show

    Bikini Atoll

    Bikini Atoll in the Marshall Islands was the site of 23 nuclear weapons tests by the United States. 50 years after the...

    (02:59)
  • Kamchatka Premiere show

    Kamchatka Premiere

    On Russia’s far Eastern edge is the stark peninsula of Kamchatka. In this surprising place heaven and hell collide. Life and...

    (01:07)
  • Chisel Teeth show

    Chisel Teeth

    The Baka of Cameron tribe sharpen their teeth to help them eat their prey.

    (00:33)
  • B-29 Superfortress show

    B-29 Superfortress

    The B-29's revolutionary fire-control system centralized operation of all the machine guns on board.

    (02:57)
  • Perfect Weapon show

    Perfect Weapon

    Introducing the bone-crunching, flesh-tearing series that takes an alternative look at ancient weaponry.

    (01:48)
  • Machu Picchu: Battling Gravity show

    Machu Picchu: Battling Gravity

    Perched high above a mountain ridge, Machu Picchu architects face a constant battle with gravity – discover how the...

    (03:00)
  • Shackleton's Island - Episode Three show

    Shackleton's Island - Episode Three

    The Ice Patrol crew study climate change and the local seal population.

    (01:46)
  • LIGO's Gabriela Gonzalez show

    LIGO's Gabriela Gonzalez

    LIGO's (Laser Interferometer Gravitational Wave Observatory) Gabriela Gonzalez discusses gravitational wave astronomy.

    (01:07)