nova lethal seas

Lethal Seas

A deadly recipe threatens the survival of countless creatures throughout Earth's oceans. We've known for years that oceans absorb about a quarter of the carbon dioxide in our atmosphere. With carbon emissions sharply rising, the silent killer is entering the seas at a staggering rate - raising the oceans' acidity. As a result, the skeletons and shells of marine creatures that form the foundation of the web of life are dissolving. Follow scientists who are seeking solutions and making breakthrough discoveries, including a unique coral garden in Papua New Guinea that offers a glimpse of what the seas could be like in a half-century. Can experts crack the code of a rapidly changing ocean - before it's too late?

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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
  • 2019-11-17T17:00:00-08:00
    KCET-HD

The Violence Paradox

Violence is all over the news. But some say we're living in the most peaceful time in history. Journey through time and the human mind to investigate whether-and how-violence has declined. And witness how people are working to stop violence today.

  • 2019-11-24T14:00:00-08:00
    KCET-HD
  • 2019-11-24T17:00:00-08:00
    KCET-HD

Animal Espionage

Camera traps and drones are revolutionizing the study of wildlife by providing an up-close look at animals without disturbing them. See how these technologies are helping us understand everything from mysterious whale behavior to tiger migration.

  • 2019-12-01T14:00:00-08:00
    KCET-HD
  • 2019-12-01T17:00:00-08:00
    KCET-HD

Ultimate Cruise Ship

Weighing 54,000 gross tons and stretching over two football fields, the Seven Seas Explorer is no ordinary boat. Join pioneering shipbuilders as they endeavor to build the ultimate cruise ship.

  • 2019-12-08T14:00:00-08:00
    KCET-HD
  • 2019-12-08T17:00:00-08:00
    KCET-HD