But environmentalists fear that fracking could contaminate water supplies, bring heavy lorry traffic to rural areas, displace investment in renewable energy and accelerate global warming. The chief scientific advisers report appears to echo those fears. History presents plenty of examples of innovation trajectories that later proved to be problematic for instance involving asbestos, benzene, thalidomide, dioxins, lead in petrol, tobacco, many pesticides, mercury, chlorine and endocrine-disrupting compounds... it says. In all these and many other cases, delayed recognition of adverse effects incurred not only serious environmental or health impacts, but massive expense and reductions in competitiveness for firms and economies...
http://www.theguardian.com/environment/2014/nov/28/fracking-risk-compared-to-thalidomide-and-asbestos-in-walport-report
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