Nova scienceNOW Previous Broadcasts

Can We Make It to Mars? (Episode #501)

KQED Plus: Tue, Jul 31, 2012 -- 10:00 PM

A trip to Mars and back could take two to three years. Can humans survive the journey, fraught with deadly meteoroids, bone and muscle wasting, and perilous levels of radiation?

Series 4, Episode 5 (Episode #405)

KQED Plus: Tue, Jul 24, 2012 -- 8:00 PM

The science behind our sense of taste; a product that may fulfill the dream of creating an artificial tree that can absorb carbon dioxide directly from the air; shedding light on the evolutionary roots of human language through studies of walrus and sea lion vocal and intellectual abilities; and a profile of medical engineer Sangeeta Bhatia.

Repeat Broadcasts:

  • KQED Plus: Wed, Jul 25, 2012 -- 2:00 AM

Series 4, Episode 4 (Episode #404)

KQED Plus: Tue, Jul 10, 2012 -- 9:00 PM

Renowned paleontologist George Poinar, who has announced his discovery of multiple clues to parasitic pandemics that could have been just as instrumental in wiping out the dinosaurs as the hypothesized asteroid impact; the beauty - and dangers - of the northern lights; two drugs that may help kids with muscular dystrophy or the frail elderly, who don't have the option of hopping on a treadmill to build strength and endurance; and a profile of rocket scientist and astronaut Franklin Chang-Diaz.

Repeat Broadcasts:

  • KQED Plus: Wed, Jul 11, 2012 -- 3:00 AM

Series 4, Episode 2 (Episode #402)

KQED Plus: Tue, Jul 3, 2012 -- 10:00 PM

Astronomers on the brink of finding "another Earth" in our galaxy, using a new planet-hunting machine: the Kepler telescope; Rudy Tanzi, a pioneer in discovering genes for Alzheimer's disease, and others who are on the hunt for the genetic key to autism; the use of computers to authenticate paintings; and a profile of spider scientist Maydianne Andrade.

Repeat Broadcasts:

  • KQED Plus: Wed, Jul 4, 2012 -- 4:00 AM
Become a KQED sponsor

TV Technical Issues

    TV Technical Issues
    • 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. […]

    • Mon 8/31: KQET Signal break-up (DT25.1, 25.2, 25.3)

      UPDATE: As of shortly after 7pm Monday evening, repairs were completed at the KQET transmitter, and the signal appears to be stable. Thanks for your patience. – – – – – – – – – – – – – – – – – – – Original post Monday 11am: We are aware of the break-up […]

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

KQED DTV Channels



Channels 9.1, 54.2, 25.1
XFINITY 9 and HD 709
Wave 9 and HD 164
DirecTV, Dish Network, AT&T U-verse: Channel # may vary, labeled as KQED, or as KQET in the 831 area code

All HD programs



Channels 54.1, 9.2, 25.2
XFINITY 10 and HD 710
Wave 10
DirecTV, Dish Network, AT&T U-verse: IF this channel provided to customer, channel # may vary, labeled as KQEH

KQED Plus, formerly KTEH



Channel 54.3
Wave 157

Arts, food, how-to, gardening, travel

KQED World

KQED World

Channel 9.3
Wave 156

History, world events, news, science, nature



Channel 54.5 & 25.3
XFINITY 191 & 621
Wave 154

24-hour national Spanish-language network



Channel 54.4
Wave 155

Quality children's programming parents love too