A newly released research report from the University of Colorado, Boulder, has found that incidents of methane contamination from fracking wells are rare. When they do happen they result from failed or missing protective measures, not the controversial technique itself. Fracking, or hydraulic fracturing, involves injecting water, sand and chemicals at high pressure into holes drilled hundreds or thousands of feet into the earth. Four years ago cabinet lifted the moratorium on fracking. A second phase of scientific assessment of the process has just been completed, Project leader, Greg Schreiner speaks to Stephen Kirker

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