eye-3-yellow-3d-2-new-logo philly_kyw_new philly_94wip_new 35h_cbssportsrad_philly philly_wpht_new

Nick Devatzes

(A Marcellus shale drilling site in Pennsylvania.  File photo)

Geologist: Fracking Can Cause Small Earthquakes

Scientists are exploring a new concern about gas extraction in Pennsylvania’s Marcellus Shale beds: Earthquakes.

11/12/2011

Follow

Get every new post delivered to your Inbox.

Join 31,456 other followers