Reuters: Should oil and gas producers be allowed to hydraulically fracture wells even if there is a small but hard-to-quantify risk to the environment, property and human life?
That is the question politicians, environmentalists, local residents and the media are all grappling with across large parts of the United States, Britain and other countries.
For some environmental campaigners and local residents, the answer is No. Fracking should not be allowed unless and until it can be shown to pose no threat...