A U.S. judge in Wyoming said the Bureau of Land Management can't regulate hydraulic fracturing — because more than a decade ago, Congress specifically excluded fracking from federal oversight.
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Hundreds of people have evacuated their homes because of fires in California, New Mexico and Arizona. A heat wave across the region is contributing to the problem — and in some cases, setting records.
Gov. John Hickenlooper signed legislation last month making the barrels legal. The law goes into effect Aug 10.
Across the U.S. and European populations, about 99 percent of people live under light-polluted skies. But the western U.S. is relatively dark.
The USGS said the Mancos Shale formation holds about 66.3 trillion cubic feet of gas, up from 1.6 trillion estimated in 2003.
California has so much solar energy that some days, there's too much. One solution is to join forces across state borders. But in the West, that's sparking some not-so-neighborly opposition.
Around the country, and in Colorado, houses, schools and shopping centers are being built on old oil and gas fields.
The Colorado Public Employee’s Retirement Association wants to know how oil companies are preparing for climate change.
From 2001-2011, a football field of natural area disappeared every two-and-a-half minutes in the West -- most of it on private land.
Gassy cows account for a good deal of the methane — a powerful greenhouse gas — generated by livestock farming. Danish researchers think feeding cows oregano might help rein in the bovine burps.
The new law, which Gov. John Hickenlooper will sign Thursday, allows homeowners to collect as much as 110 gallons of rain.
Colorado is already two years ahead of the rest of the country in trying to get a lid on the powerful greenhouse gas.
Fish counts and habitat along the Big Thompson are far from restored after the 2013 floods.
The Supreme Court called the cities' limits "invalid and unenforceable" because state law trumps the local ordinances.
As thousands of younger Americans leave the military — which has been downsizing lately — the USDA would like them to consider carrying the torch as older farmers start to retire.