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

Celebrating 125 Years

  • goodall-391-2.jpg

    Jane Goodall

    Over the course of 50 years Jane has witnessed the lives of three generations of chimpanzees.

  • Picture of the shadow of Mount Everest cast over mountains

    Explorer Moment

    Ed Viesturs shares an early morning view from Everest.

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