rock has recently been shaken by 27 quakes with magnitude 2 or greater . Scientists say this is the result of pushing rocks into the ground . This increases pore pressure in the rocks causing faults to ' melt ' more easily .
Azle has recently been shaken by 27 quakes with magnitude two or greater . Scientists say this is the result of injecting wastewater into the ground . This increases pore pressure in the rock causing faults to 'fail ' more easily .