Plaintiffs suing local oil and gas companies for damages caused by the 2011 Prague earthquake gained access on Tuesday to what could prove to be critical -- and possibly incriminating -- evidence. 

When we report on induced seismicity, or man-made earthquakes in Oklahoma, we generally point out that these are quakes believed to be caused by injecting oilfield waste water underground, and not by hydraulic fracturing. But a new study shows there may be some exceptions to this.

Frustrated. That sums up how a lot of Oklahomans feel about the state's response to a dramatic increase in earthquakes over the past eight years.