2 November 2011 Updated at 05:59 ET
Fracking tests near Blackpool 'likely cause' of tremors
Shale gas drilling has caused controversy in the US
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Warning over green energy spend
It is "highly probable" that shale gas test drilling triggered earth tremors in Lancashire, a study has found.
link-
http://www.bbc.co.uk/news/uk-england-lancashire-15550458