NASA satellite image. Jupiter is a planet covered in storms. Thousands of kilometers across, these storms are larger than anything we see on Earth. | Still from "Nova" The Planets: Jupiter

The Planets: Jupiter

Jupiter's massive gravitational force made it a wrecking ball when it barreled through the early solar system. But it also shaped life on Earth, delivering comets laden with water - and perhaps even the fateful asteroid that wiped out the dinosaurs.


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Why Sharks Attack

In recent years, an unusual spate of deadly shark attacks has gripped Australia, resulting in five deaths in 10 months. At the same time, great white sharks have begun appearing in growing numbers off the beaches of Cape Cod, Massachusetts, not far from the waters where Steven Spielberg filmed the ultimate shark fright film, Jaws. What's behind the mysterious arrival of this apex predator in an area where they've rarely been seen for hundreds of years? Are deadly encounters with tourists inevitable?

  • 2019-08-25T14:00:00-07:00
  • 2019-08-25T17:00:00-07:00

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.

  • 2019-09-01T15:00:00-07:00
  • 2019-09-01T18:00:00-07:00

Rise of the Superstorms

Dive into the devastation wrought by Hurricanes Harvey, Irma and Maria. How can scientists better predict these storms, and what does the 2017 season tell us about the likelihood of similar storms in the future?

  • 2019-09-08T15:00:00-07:00
  • 2019-09-08T18:00:00-07:00

Treasures of the Earth: Gems

Gemstones like diamonds, rubies, opal and jade are the ultimate treasures. Delve into Earth's depths to discover how these precious stones are forged and what explains the unique allure of each captivating gemstone.

  • 2019-09-15T15:00:00-07:00
  • 2019-09-15T18:00:00-07:00