National Geographic Daily News

Breaking Fuel From the Rock

Geologists long knew there was natural gas in the Marcellus shale formation, but thought it impossible to unlock. But producers in the last decade learned to mine this huge resource by drilling horizontally to reach a large surface area, then fracturing the rock with high-pressure water, sand, and lubricant chemicals.

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Marcellus Shale Drilling
Marcellus Shale Drilling

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Illustrations by Stephen Rountree
Design by Stefan Estrada

Illustration Not to Scale

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    National Geographic explores how we can feed the growing population without overwhelming the planet in our food series.

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