A comet heads toward Planet Earth.

Day The Dinosaurs Died

Investigate how an asteroid vanquished the dinosaurs 66 million years ago. Join scientists as they drill into the impact crater and, for the first time, reconstruct the hell on earth that unfolded in the minutes, hours and months after the impact.

Get the free PBS App

Full Episodes

Upcoming Airdates

Why Bridges Collapse

In 2018, Italy's Morandi Bridge collapsed, killing 43 people. NOVA investigates what went wrong and explores other bridge collapses across the United States. How can new engineering techniques make bridges safer and prevent such tragedies?

  • 2019-10-20T15:00:00-07:00
    KCET-HD
  • 2019-10-20T18:00:00-07:00
    KCET-HD

Look Who's Driving

Tech giants and car manufacturers alike are developing self-driving cars - and some of them are already on public roads. But what must computers be capable of to truly take the wheel? And could they eventually be safer than human drivers?

  • 2019-10-27T15:00:00-07:00
    KCET-HD
  • 2019-10-27T18:00:00-07:00
    KCET-HD

Secrets of the Sky Tombs

A team of daring scientists reveals ancient secrets of the first people to settle the forbidding Himalayas. Join them as they climb into mountain tombs that preserve evidence of strange rituals designed to ward off the restless spirits of the dead.

  • 2019-11-03T14:00:00-08:00
    KCET-HD
  • 2019-11-03T17:00:00-08:00
    KCET-HD

Dead Sea Scroll Detectives

What can new technology reveal about the ancient Dead Sea Scrolls? Join scientists as they investigate suspicious, newly surfaced fragments to see if they're forfeited, and use imaging techniques to digitally unravel the charred remains of a scroll.

  • 2019-11-10T14:00:00-08:00
    KCET-HD
  • 2019-11-10T17:00:00-08:00
    KCET-HD