The technique involves pumping fluids into a well to recover natural gas from shale rock.

BBC: China firms to invest $2bn exploring shale gas reserves

Another worry is that fracking fluids regurgitated up well-shafts might percolate into groundwater.

ECONOMIST: Shale gas

"Hydraulic fracturing in a well for shale gas development, which involves injection of fluids to fracture the shale and release the gas up the well, has been confirmed as the cause for small felt seismic events at one location in the world, " the report states.

CNN: Debate over fracking, quakes gets louder

Texas became the first state in the union to require well-by-well disclosure of all ingredients of fracturing fluids being used anywhere in the state when Governor Rick Perry signed into law House Bill 3328, the Texas Hydraulic Fracturing Fluid Disclosure bill, in June, 2011.

FORBES: Clearing The Air On Hydraulic Fracturing Laws In Texas

Faulty blowout preventers, errors in the management of drilling fluids, a sub-par cementing job, questionable well design, haste it was a confluence of these factors that led to the blowout.

FORBES: Offshore Oil Czar Bromwich Falls Flat With Op-Ed Defending Permit Delays

Suctioning the nose is another option, as well as acetaminophen for fever, and another old standby: "lots of fluids, " says Alanna Levine, a pediatrician in Tappan, N.

WSJ: Missed Warnings on Cold Medicine for Children

With that stroke of his pen, Governor Perry made Texas the first state in the country to require by statute the well-by-well public disclosure of all the constituent chemicals, compounds and water volume contained in frac fluids.

FORBES: Why the Texas Disclosure Law Really Does Work

After plaintiffs' attorneys rested their case Wednesday, U.S. District Judge Carl Barbier ruled there was no evidence that BP's drilling fluids contractor M-I LLC made any decision that led to the blowout of BP's Macondo well.

NPR: Claims Against BP Contractors Dismissed At Trial