Can We Cool the Planet?

As global temperatures rise, scientists are exploring solutions from planting trees to sucking carbon out of the air to geoengineering. But would they work? And what are the risks of engineering Earth's climate?

PBS’ premier science series helps viewers of all ages explore the science behind the headlines. Along the way, NOVA programs demystify science and technology and highlight the people involved in scientific pursuits.

NOVA Episodes

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Touching the Asteroid

S47 Ep15 | 54m 3s

Spacecraft OSIRIS-REx attempts to grab a piece of an asteroid to bring it back to Earth.

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Nature's Fear Factor

S47 Ep9 | 53m 31s

Can bringing predators—and fear—back into an ecosystem help restore its natural balance?

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A to Z: How Writing Changed the World

S47 Ep14 | 53m 31s

The creation of printing, the first information technology, drove empires and revolutions.

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A to Z: The First Alphabet

S47 Ep13 | 54m 1s

The birth of writing and the first alphabet were among the world’s most vital inventions.

NOVA Extras

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