it also poses real and substantial risks significant concerns remain significant concerns remain significant concerns remain significant concerns remain significant concerns remain significant concerns remain significant concerns remain risks that unconventional oil and gas development create environmental risks significant concerns remain significant concerns remain significant concerns remain significant concerns remain significant concerns remain significant concerns remain significant concerns remain significant concerns remain significant concerns remain significant concerns remain significant concerns remain environmental risks significant concerns remain significant concerns remain significant concerns remain it also poses real and substantial risks set of serious risks http://www.edf.org/climate/five-areas-of-concern significant concerns remain it also poses real and substantial risks significant concerns remain significant concerns remain significant concerns remain significant concerns remain significant concerns remain significant concerns remain significant concerns remain significant concerns remain significant concerns remain real environmental and climate risks significant concerns remain significant concerns remain significant concerns remain real environmental and climate risks significant concerns remain significant concerns remain significant concerns remain significant concerns remain significant concerns remain significant concerns remain significant concerns remain info-graphic significant concerns remain significant concerns remain significant concerns remain significant concerns remain significant concerns remain significant concerns remain significant concerns remain significant concerns remain significant concerns remain significant concerns remain significant concerns remain significant concerns remain significant concerns remain significant concerns remain significant concerns remain significant concerns remain significant concerns remain real environmental and climate risks significant concerns remain significant concerns remain significant concerns remain significant concerns remain significant concerns remain EDF’s natural gas work significant concerns remain significant concerns remain significant concerns remain significant concerns remain significant concerns remain significant concerns remain risks that unconventional oil and gas development create significant concerns remain serious risks significant concerns remain significant concerns remain significant concerns remain significant concerns remain significant concerns remain significant concerns remain significant concerns remain significant concerns remain significant concerns remain significant concerns remain significant concerns remain significant concerns remain significant concerns remain significant concerns remain significant concerns remain significant concerns remain significant concerns remain significant concerns remain environmental risks significant concerns remain significant concerns remain significant concerns remain significant concerns remain significant concerns remain significant concerns remain significant concerns remain significant concerns remain risks significant concerns remain significant concerns remain significant concerns remain significant concerns remain significant concerns remain significant concerns remain significant concerns remain significant concerns remain significant concerns remain significant concerns remain significant concerns remain significant concerns remain significant concerns remain significant concerns remain significant concerns remain environmental risks significant concerns remain significant concerns remain significant concerns remain significant concerns remain significant concerns remain it also poses real and substantial risks risks significant concerns remain significant concerns remain significant concerns remain significant concerns remain significant concerns remain significant concerns remain significant concerns remain significant concerns remain risks that unconventional oil and gas development create significant concerns remain significant concerns remain significant concerns remain significant concerns remain significant concerns remain significant concerns remain environmental risks significant concerns remain significant concerns remain significant concerns remain significant concerns remain significant concerns remain significant concerns remain significant concerns remain significant concerns remain significant concerns remain significant concerns remain significant concerns remain significant concerns remain significant concerns remain significant concerns remain significant concerns remain significant concerns remain significant concerns remain significant concerns remain environmental risks significant concerns remain real environmental and climate risks significant concerns remain significant concerns remain significant concerns remain significant concerns remain significant concerns remain significant concerns remain Natural gas: five areas of concern significant concerns remain environmental risks significant concerns remain significant concerns remain significant concerns remain can create serious air quality problems significant concerns remain real environmental and climate risks significant concerns remain significant concerns remain significant concerns remain significant concerns remain significant concerns remain significant concerns remain significant concerns remain significant concerns remain significant concerns remain significant concerns remain significant concerns remain reduce the environmental impacts of natural gas significant concerns remain significant concerns remain significant concerns remain significant concerns remain other environmental risks along the natural gas supply chain significant concerns remain significant concerns remain significant concerns remain significant concerns remain significant concerns remain significant concerns remain Natural gas: Five areas of concern [INFOGRAPHIC] significant concerns remain significant concerns remain significant concerns remain significant concerns remain significant concerns remain significant concerns remain significant concerns remain significant concerns remain significant concerns remain significant concerns remain risks that unconventional oil and gas development create significant concerns remain significant concerns remain significant concerns remain significant concerns remain significant concerns remain significant concerns remain significant concerns remain significant concerns remain significant concerns remain significant concerns remain significant concerns remain significant concerns remain significant concerns remain significant concerns remain significant concerns remain significant concerns remain significant concerns remain significant concerns remain significant concerns remain it also poses real and substantial risks significant concerns remain risks that unconventional oil and gas development create significant concerns remain real environmental and climate risks significant concerns remain significant concerns remain significant concerns remain significant concerns remain significant concerns remain significant concerns remain significant concerns remain significant concerns remain significant concerns remain significant concerns remain real environmental and climate risks significant concerns remain significant concerns remain significant concerns remain significant concerns remain significant concerns remain significant concerns remain risks that unconventional oil and gas development create significant concerns remain significant concerns remain