Fracking safety: report warns of ’significant unknowns’
▻http://www.theguardian.com/environment/2014/mar/25/fracking-safety-oil-gas-report
Oil and gas drilling can contaminate water sources with methane, as Steve Lipsky, above, demonstrates by setting match to water flowing from his well outside his home in rural Parker County near Weatherford, Texas, US. Photograph: LM Otero/AP
