US offers international help with shale gas extraction

Business Green: The US has offered to help developing countries use shale gas as a cleaner alternative to coal. Making the offer at a conference earlier this week involving 20 countries, US officials pointed to national security and climate change mitigation as key drivers. Shale gas is derived from underground shale deposits that are broken up using a process known as hydraulic fracturing. Liquid is injected into faults in the shale, extending them and opening them up, which in turn frees up ......

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