Mark Ruffalo to David Cameron: fracking an ‘enormous mistake’ – video

Actor Mark Ruffalo calls on the UK prime minister to abandon his push on fracking and leave fossil fuels in the ground. A prominent opponent of fracking in the US, Oscar-nominated Ruffalo addresses David Cameron in a video message, telling him he is making an enormous 'legacy mistake' in supporting the controversial process of extracting gas by hydraulic fracturing. Ruffalo makes his comments in an interview with Friends of the Earth