Activists attend an anti-fracking rally outside the Houses of Parliament in central London on January 26, 2015, calling for MPs to vote for a moratorium on fracking within the UK. A committee of British lawmakers demanded a national moratorium on fracking due to environmental concerns on Monday, ahead of a crucial vote intended to boost the shale gas industry. AFP PHOTO / LEON NEAL (Photo credit should read LEON NEAL,LEON NEAL/AFP/Getty Images)

Activists attend an anti-fracking rally outside the Houses of Parliament in central London on January 26, 2015, calling for MPs to vote for a moratorium on fracking within the UK. A committee of British lawmakers demanded a national moratorium on fracking due to environmental concerns on Monday, ahead of a crucial vote intended to boost the shale gas industry. AFP PHOTO / LEON NEAL        (Photo credit should read LEON NEAL,LEON NEAL/AFP/Getty Images)