Hawaii: Roots of Fire Previous Broadcasts

KQED World: Sat, Jun 7, 2014 -- 1:00 PM

This documentary goes down below the Hawaiian Islands in a search for the hidden forces that drive the planet's largest and most active volcanic system. It follows earth scientists as they work among the volcanoes of the Big Island of Hawaii, pursuing clues and compiling evidence in a quest to shed new light on the mysterious inner Earth process that has been producing giant volcanoes in the middle of the Pacific Ocean for more than 75 million years.
Scientists have long been puzzled over the source of the huge quantities of lava erupting out of Hawaii's massive volcanoes. Does the lava come from just below the Earth's crust? Or does it come from much deeper, perhaps even as far down as the Earth's core, some 1800 miles below the surface? The film focuses on an international team of scientists who boldly take on these key questions with a major drilling project into the flanks of Mauna Kea, Hawaii's tallest volcano. As their work progresses, another group of scientists embarks on a huge seismic study that deploys instruments on the islands and the seafloor surrounding them. After years of painstaking research, startling new discoveries are made. Not only do the scientists determine where the lava is coming from, but they solve other long-standing mysteries about the workings of Hawaii's magnificent volcanoes.

Repeat Broadcasts:

  • KQED World: Sun, Jun 8, 2014 -- 12:30 PM
  • KQED World: Sun, Jun 8, 2014 -- 7:30 AM
  • KQED World: Sat, Jun 7, 2014 -- 7:30 PM
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TV Technical Issues

    TV Technical Issues
    • 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 […]

    • Tues 9/29: Planned outage for KQET DT25 Over the Air signal

      (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. […]

To view previous issues and how they were resolved, go to our TV Technical Issues page.

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