“Proponents of natural gas have called it a “bridge” fuel to a clean energy economy, since it produces just over half as much carbon dioxide when burned as coal does. But leaking natural gas, which is 80 percent methane, has also added to U.S. greenhouse gas emissions. Methane traps heat 86 times more effectively than carbon dioxide over a 20-year period.
Moreover, fracking has been connected to elevated risks of asthma and respiratory illnesses. Fracking has also been linked to elevated levels of benzene and other contaminants in groundwater supplies. In Oklahoma, wastewater disposal from fracking has been linked to earthquakes.”
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