There's no doubt that critics of hydraulic fracturing a practice colloquially known as fracking that involves injecting water, sand and chemicals into underground rock to free vast reserves of gas have some legitimate concerns.
The industry has boomed in recent years, thanks to a stunning expansion of drilling in previously untapped areas because of the use of hydraulic fracturing, or fracking, which injects sand, water and chemicals to break apart rock and free the gas inside.
During fracking, large volumes of water, along with sand and hazardous chemicals, are injected into the ground to break rock apart and free the oil and gas.