Fracking explodes oil production in U.S.

Using hydraulic fracturing, also known as "fracking," crews then blast sand, water and chemicals into the rock to draw out even more oil and gas.
Because of these new processes, Goldman Sachs predicts that in just five years, the U.S. could pass Saudi Arabia and Russia as the world's largest oil producer. Finally, a decades-old dream, talked about by every U.S. president since Richard Nixon, seems possible -- energy independence.
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http://abcnews.go.com/Business/MadeInAmerica/oil-boom-creating-overnight-millionaires-kansas-us-energy/story?id=16297143#.T6qzCY5Gj8A

But at what cost? Fracking tends to foul or even poison ground water. So, if people near by or farms with animals are depending upon wells or even nearby rivers, they might get sick or even be poisoned. So, fracking, because of ground water casualties might have to be better regulated or a better way might need to be found.