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What Makes a Planet a Planet? The Story of Pluto

What makes a planet a planet? In 2006, the International Astronomical Union stripped Pluto of its planet status. Phillip Metzger, a planetary scientist at the University of Central Florida joins Hari Sreenivasan to discuss to the reasoning behind the reclassification of planets. Watch this clip from "SciTech Now."

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Nova

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

Nova

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

Nova

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

Nova

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

Nova

Decoding Da Vinci

Journey to Florence to discover how Leonardo da Vinci used science, from human dissections to innovative painting techniques, to create his legendary artwork. Learn why Mona Lisa's smile is so captivating - and what it took to create it.

  • 2019-11-17T14:00:00-08:00
    KCET-HD