Extras

    Video thumbnail: NOVA The Case for Eating Bugs

    NOVA

    The Case for Eating Bugs

    Would you eat insects if it helped save the planet?

    The Case for Eating Bugs

    Video thumbnail: NOVA Grow Your Own Crystals

    NOVA

    Grow Your Own Crystals

    What should you do with the borax you have leftover from making slime? Make crystals!

    Grow Your Own Crystals

    Video thumbnail: NOVA WannaCry Cyberattack Explained

    NOVA

    WannaCry Cyberattack Explained

    The WannaCry cyberattack cost the economy billions of dollars. Here's why that's scary.

    WannaCry Cyberattack Explained

    Video thumbnail: NOVA Meet the Gastric-Brooding Frog

    NOVA

    Meet the Gastric-Brooding Frog

    These frogs barfed up their babies—and now scientists are trying to revive them.

    Meet the Gastric-Brooding Frog

    Video thumbnail: NOVA Should You Wash Your Hands?

    NOVA

    Should You Wash Your Hands?

    What do we really mean when we say that we’re clean?

    Should You Wash Your Hands?

    Video thumbnail: NOVA Holocaust Escape Tunnel Preview 1

    NOVA

    Holocaust Escape Tunnel Preview 1

    At ground zero for the final solution, scientists uncover a story of hope and bravery.

    Holocaust Escape Tunnel Preview 1

    Video thumbnail: NOVA Scientists Walking Confidently

    NOVA

    Scientists Walking Confidently

    NOVA has stood for science since 1974, bringing remarkable discoveries to TV and beyond.

    Scientists Walking Confidently

    Video thumbnail: NOVA Is Fear Contagious

    NOVA

    Is Fear Contagious

    Fear may be able to spread from person to person—just like a virus.

    Is Fear Contagious

    Video thumbnail: NOVA Snot 101

    NOVA

    Snot 101

    Here's everything you didn't want to know about snot.

    Snot 101

    Video thumbnail: NOVA A Scientist Walks Into A Bar #1

    NOVA

    A Scientist Walks Into A Bar #1

    An astrophysicist must explain her work on black holes so two comedians can understand it.

    A Scientist Walks Into A Bar #1

    Video thumbnail: NOVA A Scientist Walks Into A Bar #2

    NOVA

    A Scientist Walks Into A Bar #2

    A scientist must explain the Big Bang and dark energy so two comedians can understand it.

    A Scientist Walks Into A Bar #2

    Video thumbnail: NOVA What Makes Science True?

    NOVA

    What Makes Science True?

    Science is facing what many consider a reproducibility crisis, and the stakes are high.

    What Makes Science True?

    Video thumbnail: NOVA Zika: The Untold Story

    NOVA

    Zika: The Untold Story

    Join the scientists who saw Zika coming as they trace its origins.

    Zika: The Untold Story

    Video thumbnail: NOVA Day the Dinosaurs Died Preview

    NOVA

    Day the Dinosaurs Died Preview

    Experts drill into the impact crater of an asteroid that created a worldwide cataclysm.

    Day the Dinosaurs Died Preview

    Video thumbnail: NOVA Do Birds Remember Faces?

    NOVA

    Do Birds Remember Faces?

    Crows can remember the face of their captors—even after generations.

    Do Birds Remember Faces?

    Video thumbnail: NOVA Bird Brain Preview

    NOVA

    Bird Brain Preview

    Watch as birds solve puzzles and challenge our basic notions of intelligence.

    Bird Brain Preview

    Video thumbnail: NOVA Darwin's Beetles Spar Off

    NOVA

    Darwin's Beetles Spar Off

    Beetles make up the largest group of insects on Earth. Why do so few have massive pincers?

    Darwin's Beetles Spar Off

    Video thumbnail: NOVA Why Fiddler Crabs Have Giant Claws

    NOVA

    Why Fiddler Crabs Have Giant Claws

    Fiddler crabs' large claws look intimidating, but is deadly combat their main purpose?

    Why Fiddler Crabs Have Giant Claws

    Video thumbnail: NOVA Extreme Animal Weapons Preview

    NOVA

    Extreme Animal Weapons Preview

    NOVA uncovers the secrets of nature’s battleground—claws, horns, fangs and all.

    Extreme Animal Weapons Preview

    Video thumbnail: NOVA Killer Floods Preview

    NOVA

    Killer Floods Preview

    Scientists uncover geologic evidence of epic floods that tore through ancient landscapes.

    Killer Floods Preview

    Video thumbnail: NOVA First Time Britain Left Europe

    NOVA

    First Time Britain Left Europe

    Geologists think these iconic chalk cliffs hold an extraordinary secret.

    First Time Britain Left Europe

    Video thumbnail: NOVA Killer Hurricanes Preview

    NOVA

    Killer Hurricanes Preview

    Experts reconstruct the Great Hurricane of 1780 to help predict the risk of future storms.

    Killer Hurricanes Preview

    Video thumbnail: NOVA What Makes a Hurricane?

    NOVA

    What Makes a Hurricane?

    Hurricanes bring wind, rain, and destruction—but how do they form?

    What Makes a Hurricane?

    Video thumbnail: NOVA Ancient Volcanic Activity in Ice

    NOVA

    Ancient Volcanic Activity in Ice

    Researchers try to prove the existence of a 13th century volcanic eruption using ice.

    Ancient Volcanic Activity in Ice