Summary: Stories: 1) With Gas Boom, Pennsylvania Fears New Toxic Legacy 2) Town's Effort To Link Fracking And Illness Falls Short 3) Medical Records Could Yield Answers On Fracking 4) Sick From Fracking? Doctors, Patients Seek Answers 5) Pennsylvania Doctors Worry Over Fracking 'Gag Rule' 6) 'Close Encounters' With Gas Well Pollution
