20:38 GMT 02.03.2017
The US Geological Survey (USGS) has announced that 3.5 million Americans are at risk from human-induced earthquakes. This number is a drastic decrease from 2016, where 7 million were reported to be at risk from induced seismicity. Manmade earthquakes are typically caused by wastewater disposal, with fracking as a secondary cause.
10:51 GMT 31.10.2016