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Topic: Planet Earth

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Polar Extremes

Paleontologist Kirk Johnson explores the dynamic history—and future—of ice at the poles.

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The Polar Lab

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Decoding the Weather Machine

Planet Earth

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Asteroids in the sky traveling crashing towards Earth

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Asteroids: Spark of Life?

Massive flood going through road and cars

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Superfloods

Portrait of Kirk Johnson

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Particles of Thought: Mind of a Fossil Hunter

People standing next to a large tree.

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Secrets of the Forest

This Asteroid Might Make Impact With Earth in 2032

A map shows ocean circulation in the Gulf of Maine

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Ocean Currents and the Unique Ecosystem of the Gulf of Maine

A man stands in front of a herd of cattle

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Using Kelp to Reduce Methane Emissions from Cows