1."Surface uplift and time-dependent seismic hazard due to fluid injection in eastern Texas,"

2.earthquake in East Texas was caused by wastewater injection, a waste product practice by the fracking industry.

3. Wastewater injection wells handle a byproduct of fracking,.

4. salty and too contaminated with other chemicals to treat economically, so the only viable solution at present is to put it back underground." 

5.recent upturn in seismicity in Oklahoma and Kansas commonly happens where injection occurs close to the crystalline basement, so we're getting lots of earthquakes in those places."