Study correlates links between Oklahoma quakes, wastewater disposal

Seismic activity grew in central Oklahoma in the 18 months leading up
to Dec. 31, 2015, but declined markedly during the following year as
the state began to regulate oil and gas wastewater disposal more
aggressively, the US Department of Energy’s Fossil Energy Office (FEO) reported. Decreased oil and gas production in response to falling prices also played a part, it added.