Nature World: Fracking's impact on animals is still largely unknown, which scientists see as a real problem given that business is booming.
Hydraulic fracturing, or fracking, shows no signs of stopping. Between 2005 and 2013, some 82,000 fracking wells were drilled into the shale deposits beneath 17 states, according to the environmental advocacy group Environment America.
But scientists are concerned about this method of accessing oil and gas beneath the soil - which involves injecting chemicals into the...