Amazing Underground Secrets Previous Broadcasts

Mastering The Underground World (Episode #103H)

KQED 9: Wed, Jul 30, 2014 -- 11:00 PM

It's a whole new world down there if we can conquer its challenges. Some of the greatest human minds have been engaged in making the underground safe and accessible. In this program we look at the most breathtaking feats of technology, past and present. From pick-axed tunnels to an excavated mountain, from Roman sewers to a vast 27km long particle accelerator - these are the ways we've harnessed the potential of this, the planet's last frontier.

Repeat Broadcasts:

  • KQED 9: Thu, Jul 31, 2014 -- 5:00 AM

Secrets & Treasures (Episode #102H)

KQED 9: Wed, Jul 23, 2014 -- 11:00 PM

The underground world is one of secrets, ideal for hiding everything from misdeeds to the world's greatest works of art. This program reveals some of the most exciting discoveries of buried treasure - then takes us to another kind of secret, the sort that governments like to hide, not just from their enemies, but from their own people. From ancient history right up to the present day, the underground world is the first choice for those seeking concealment.

Repeat Broadcasts:

  • KQED World: Sun, Jul 27, 2014 -- 5:00 PM
  • KQED Life: Sat, Jul 26, 2014 -- 4:00 AM
  • KQED Life: Fri, Jul 25, 2014 -- 10:00 PM
  • KQED 9: Thu, Jul 24, 2014 -- 5:00 AM

Natural Wonders (Episode #101H)

KQED 9: Wed, Jul 16, 2014 -- 11:00 PM

Much of the underground world is carved by nature; many of its greatest treasures are the result of elemental processes as old as the planet itself. We haven't been slow to make use of these extraordinary and dramatic spaces - they provide us with a record of our earliest history, if we know where to look. But it's a dangerous, often threatening realm, with its dark caverns, narrow environments and rushing water. Far from the light of day we join intrepid underground explorers as they push back the boundaries, make amazing discoveries and share sights of remarkable beauty.

Repeat Broadcasts:

  • KQED Life: Sat, Jul 19, 2014 -- 4:00 AM
  • KQED Life: Fri, Jul 18, 2014 -- 10:00 PM
  • KQED 9: Thu, Jul 17, 2014 -- 5:00 AM
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    • Wed 11/10: KQEH Over The Air planned short outages

      (DT54-1 through 54-5) Wednesday 11/10, 11am The DT54 Over the Air signal will need to switch from main to auxiliary levels late Wednesday morning for the safety of the crew working on another station’s equipment on the tower, then back to the main antenna mid-afternoon when work is completed. The change should be for a […]

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      (DT25.1, 25.2 & 25.3) The Fremont Peak transmission tower will be undergoing one of its routine maintenance inspections Tuesday. We expect to shut down the KQET DT25 signal at approximately 2pm (along with other stations on the tower), and expect to return around 3pm. Most TVs will automatically recover the signals after an outage of […]

    • KQED DT9.1 ? 9.3, Sunday 9/20: Over the Air signal down

      UPDATE: KQED’s Sutro Tower signal was restored to full power shortly after 3pm on Monday. If your TV set has still not re-acquired the signal automatically, a rescan is probably in order. – – – – – – – – – UPDATE: Our over the air signal was restored at 50% power apx 4pm Sunday. […]

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