Brussels, 21/11/2012 (Agence Europe) - The principle of precaution must preside over any resumption of the exploration and exploitation of shale gas and oil shale in the countries of the EU which wish to do so, and in any case, this exploitation should be supported by regimes of solid rules, states the European Parliament. The member states must also be “cautious” when it comes to authorising the exploitation of non-conventional fossil fuels, pending the analysis which will determine...