Fracking – the reality, the risksand what the future holds

Fracking has been hailed as an energy miracle in the US, yet globally it faces blocks and even bans. Adam Vaughan explains what it is and why it is so controversialWhat is fracking?
Hydraulic fracturing, or fracking as it is better known, is a method of extracting oil and gas trapped in shale and other rock formations.The modern version involves pumping large amounts of water down a well at high pressure, along with sand and chemicals that make up a tiny fraction of the volume. Together, this &l