Guardian: The pumping of water, sand and chemicals underground at pressure to crack rocks and release gas dominated headlines in 2013. Fracking for shale gas, even if the process has not actually been producing much energy beyond its homeland in the US, has barely been out of the public consciousness.
In the UK, drilling for oil by fracking explorers Cuadrilla in Sussex roused one of the biggest environmental protests in years, as thousands marched outside the village of Balcombe and Green party MP Caroline...