Polish report: shale gas extraction not harmful

(AP) -- A scientific study in Poland has found that shale gas extraction at one site produced some toxic refuse but that the waste was reused and didn't harm the environment.

Fracking risks, fact or fiction?

A Simon Fraser University researcher known for his expertise on naturally occurring hazards will participate Friday in a shake down of the truth about a new form of human-induced earthquakes.

EPA theorizes fracking-pollution link

(AP) -- The U.S. Environmental Protection Agency announced Thursday for the first time that fracking - a controversial method of improving the productivity of oil and gas wells - may be to blame for causing groundwater pollution.

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