National Geographic Daily News

Mapping a Gas Boom

Drillers have etched a growing mark on Pennsylvania since first producing natural gas out of its shale rock. Fifteen producing wells are in state forests, and seismic surveyors are eyeing state parks. The map and graph below show the growth of shale wells in Pennsylvania from January 2007 to September 2010. Use the slider below the graph to adjust the date.

Marcellus Shale Map
2007

Illustration by Stephen Rountree
Design by Stefan Estrada

Mapping a Gas Boom

How to Feed Our Growing Planet

  • Feed the World

    Feed the World

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

See blogs, stories, and news »

The Innovators Project

  • Brave Sage of Timbuktu

    Brave Sage of Timbuktu

    Abdel Kader Haidara had made it his life's work to document Mali's illustrious past. When the jihadists came, he led the rescue operation to save 350,000 manuscripts.

See more innovators »

See Us on Google Glass

Shop Our Space Collection

  • Be the First to Own <i>Cosmos: A Spacetime Odyssey</i>

    Be the First to Own Cosmos: A Spacetime Odyssey

    The updated companion book to Carl Sagan's Cosmos, featuring a new forward by Neil deGrasse Tyson is now available. Proceeds support our mission programs, which protect species, habitats, and cultures.

Shop Now »