fracking

Natural gas is trapped. using millions of litres of water, sand and an array of chemicals have many of which are carcinogenic, endocrine disrupting or just plain toxic. the rock is repeatedly fractured by hight pressure explosions underground , allowing the gas to be collected. Tens of thousands of wells have been dug in 32 american states , Canada, Aurstralia and  many other parts of the woeld, and a groundswell of popular protest has started.
This is because grounwater has freqeuntly been contaminated as a result , ether with mathane or the chemicals.