Scientists say a spate of earthquakes in the middle of the United States is “almost certainly” man-made. Since 2001, the average number of 3.0-or-greater earthquakes each year spiked significantly, culminating in a six-fold increase in 2011 over 20th century levels.
Posts Tagged U.S. Geological Survey
Another swarm of earthquakes in an unusual part of the country has generated aftershocks of debate about whether the oil and gas drilling process called hydraulic fracturing, or fracking, is to blame.
There’s more bad news for water watchers in the Rocky Mountain West, where record snowpack from last winter has led to a dangerous runoff in some places, including Colorado’s Western Slope. The bad news is this season is apparently a statistical blip in a 30-year historical decline in Rocky Mountain snowpack, which provide between 60 and 80 percent of the water supply for the 70 million people living in the western United States.