Exacerbated by climate change, environmental destruction groundwater concerns

Although  shale gas  is often called clean energy future, but it brought about the development of environmental concerns but also caused a lot of controversy.
Cornell University research team, Robert Haworth last year published a report on shale gas research report The report cited the development of shale gas will contribute to climate change, destruction of groundwater resources and other defects.
Reported that shale gas on the extent of the impact of global warming than conventional gas and coal. Shale gas produced there are two main sources of greenhouse gases, a gas combustion are carbon dioxide and the other is a leak in the exploitation of methane gas. U.S. government and industry data show that shale gas methane gas generated at least one third more than traditional coal mining, perhaps even twice as much. Greenhouse gas methane is much higher than carbon dioxide in the atmosphere, but a relatively short residence time.
In addition, the exploitation of shale gas hydraulic fracturing technology used needs to consume a lot of water, each hydraulic needs millions of tons of broken rock in water, but the water can not be recycled.
Another concern for the development of shale gas from the possible environmental pollution.fracturing proppant As hydraulic fracturing process requires the use of a large number of toxic chemicals containing lysate, if not treated, or there is a leak, it will result in the construction area and downstream basin groundwater contamination.
It concerns the health and environmental hazards caused by the unknown, the French legislation prohibiting the use of last year, shale gas fracking. In the new president Hollande took office, this policy will change, by the people's attention.unconventional gas The new French President François Hollande announced in September this year, during his five-year tenure, the French will prohibit exploitation of shale gas. In other European countries, several small-scale projects due to the presence of shale gas environmental concerns have been halted.
U.S.  shale gas  has not yet developed a unified standard. U.S. Environmental Protection Association, Xikelubo said the United States should develop uniform standards to control methane leakage control the water used in hydraulic fracturing and to ensure that local communities have the right to say no on drilling.