fossil fuels

Each study is projected to last three years.

Winberg planned to tour a fossil-fuel research center at the University of Wyoming in Laramie on Friday.

Fossil fuel emissions have been cited by scientists as a major source of global warming.

The U.K. also relies heavily on natural gas and nuclear energy.

Sweetwater County has several major gas-drilling areas.

Fossil fuels are big business in Wyoming — extraction provides about 70 percent of its state revenue.

The number of rigs drilling for oil has hit a three-year high and that activity is pulling in new employees.

Wyoming Mining Association executive director Travis Deti says the jobs number shows that the industry has stabilized.

Texas lost two rigs and West Virginia decreased by one.

Alaska lost two rigs. Arkansas, Colorado and Louisiana were down one rig each.