BBC: Fracking: Wales could follow US in gas drilling

Following a summer when a drilling process called fracking hit the headlines, protest groups opposed to it have been springing up in Wales.

Until now, anti-fracking demonstrations have centred on Balcombe in Sussex.

BBC Wales environment correspondent Iolo ap Dafydd looks at the success of fracking for gas in the United States and searching for unconventional gas in the UK.  MORE