"Formally termed “high pressure hydraulic fracturing”, fracking is a method used to capture natural gas from shale rocks. It requires horizontal drilling deep beneath the earth’s surface, then pressurising fluid to fracture shale rocks, which allows natural gas to escape.
According to the letter, health risks associated with fracking include hazardous air pollutants; improper disposal of radioactive wastewater; and climate-altering methane emissions."
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