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.
Energy and Environment
All Energy and Environment Stories
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.
The document orders EPA Administrator Gina McCarthy or assistant administrator Mathy Stanislaus to testify at a April 22 hearing in Phoenix.
As the coal industry struggles with falling prices, weak Chinese demand, regulatory changes and competition from fracking, St. Louis-based Peabody has filed for Chapter 11 bankruptcy protection.
As governor, Bill Ritter made clean energy a priority. Now he says that the U.S. needs to move even faster to mitigate effects of climate change.
Nuclear power is carbon-free and remains the source of about 20 percent of U.S. electricity. But natural gas, wind and solar are often cheaper, and unprofitable reactors are being shut down.
Filmmaker Chris Wheeler explores the forces that shaped five Colorado landmarks.