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Artbound

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Tending Nature

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Southland Sessions

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Earth Focus

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Reporter Roundup

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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.

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Full Episodes
Season
A collapsed bridge
Episode
53:09
Nova

S46 E18: Why Bridges Collapse

How can new engineering techniques make bridges safer and prevent such tragedies?
The silhouette of an animal climbing the side of a mountain. | From "NOVA: Rise of the Mammals"
Episode
53:26
Nova

S46 E17: Rise of the Mammals

Sixty-six million years ago, an asteroid wiped out the dinosaurs in a fiery global catastrophe. An amazing new trove of fossils reveals how mammals took over, ultimately evolving into the huge array of species that rule Earth today.
Uranus and Neptune | Image from "Nova: The Planets" Ice Worlds
Episode
52:48
Nova

S46 E16: The Planets - Ice Worlds

In the far reaches of the solar system, Uranus and Neptune dazzle with unexpected rings, supersonic winds, and dozens of moons.
Saturn | Still from Nova: The Planets Saturn
Episode
53:54
Nova

S46 E15: The Planets - Saturn

NASA’s Cassini explores Saturn for 13 years. The probe captures stunning ring-moon interactions, but when it finds the ingredients for life on the moon Enceladus, a bittersweet decision is made.
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
Episode
53:18
Nova

S46 E14: 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.
Mars | Still from "Nova" The Planets: Mars
Episode
53:54
Nova

S46 E13: The Planets - Mars

Mars was once a blue water world studded with active volcanoes. But when its magnetic field and protective atmosphere faded, it became the frozen desert planet we know today. With so many necessary elements in place, did life ever form on Mars?
zIPEDFk-asset-mezzanine-16x9-yh31Ma4.jpg
Episode
53:49
Nova

S46 E12: The Planets - Inner Worlds

The rocky planets - Mercury, Venus, Earth and Mars - were born of similar material around the same time, yet only one supports life. Were Earth's neighbors always so extreme? Is there somewhere else in the solar system where life might flourish?
Nova Back to the Moon featured
Episode
53:39
Nova

S46 E11: Back to the Moon

Fifty years after humans first set foot on the Moon, new scientific discoveries are fueling excitement for a return to the lunar surface—this time, perhaps, to stay.
Viking armies row on ships with the sun on the horizon. | "NOVA: Lost Viking Army"
Episode
53:26
Nova

Lost Viking Army

Bioarchaeologists investigate a ninth-century mass grave in a rural English village. Will the remains unlock the mystery of the "Great Heathen Army," a legendary Viking fighting force that once invaded England?
A reenactment of historical warriors fighting each other on horseback. | "NOVA: First Horse Warriors"
Episode
53:09
Nova

First Horse Warriors

Horse riding played a key role in human expansion and civilization. But when and how did people first master these animals? Scientists use archaeology and genetics to uncover clues about the first horse riders and how they shaped the world.
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