There can be few issues in the climate debate as controversial as fracking for gas. The release of methane from drilling and during the extraction process, plus the extra carbon dioxide from burning gas, makes climate change more rapid and dangerous. One of the arguments against fracking has also been the probability of triggering earthquakes.
But environmental activists who use the earth tremor argument against fracking should probably be cautious if they are in favour of alternative solutions – gaining geothermal energy and lithium via boreholes from hot rocks beneath our feet.
