Since Thursday, at least 131 earthquakes have been recorded — as small as magnitude 0.2 and as big as magnitude 4 — in the Geysers geothermal steam field in Sonoma and Lake counties.

The number of total oil and gas drilling rigs in the US remained unchanged at 539, after the count had declined in 14 of the previous 15 weeks, Baker Hughes reported.

According to a recent study by the U.S. Geological Survey, armadillos have colonized much of southeastern Indiana and ...