Not a blog you must do, just interesting

Fracking and earthquakes:

http://www.forbes.com/sites/jamesconca/2016/09/07/the-connection-between-earthquakes-and-fracking/#3f152ff27f65


Clarification from the USGS fracking and earthquake relationship: https://earthquake.usgs.gov/research/induced/myths.php

Note: most of this wastewater comes from fracking and other oil/gas recovery projects