EarthFrack on or frack off: Can shale gas save the planet? Optimists see the new resource as a cheap, clean "bridging fuel" to a low-carbon future. The true picture might not be so simple, says Michael BrooksFeatures
EarthArt installation brings you face to face with fracking Not sure what to make of fracking? You can at least taste its effects at a miniature fracking rig drilling into a gallery floor in Liverpool, UK CultureLab