https://twitter.com/nytimesworld/status/799401826055426048
Scientists say they have found a direct link between fracking and earthquakes in Canada https://t.co/3KCtLTqjE2— New York Times World (@nytimesworld) 2016年11月18日
In Canada, however, a spate of earthquakes in Alberta within the last five years has been attributed to fracking, or hydraulic fracturing, in which water, chemicals and sand are injected at high pressure into a well drilled in a shale formation to break up the rock and release oil and gas.