Nearly 700 firefighters backed by air support were attacking the blaze, which was 10 percent contained.
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A carbon dioxide test center in Wyoming captures CO2 from burning coal before it enters the atmosphere.
"We do not believe the bison population level is too high or that any scientific studies would substantiate that," Superintendent Dan Wenk says.
Fire managers say they expect the fire to reach the evacuees' homes within 12 to 36 hours.
Take a moment to picture Colorado in your imagination. You’re probably seeing mountain vistas with postcard-perfect evergreen forests.
There are between 200,000 and 500,000 sage grouse in the West, down from a peak population of about 16 million.
More than 400 firefighters supported by six helicopters and two air tankers are fighting the fire.
The Navajo Nation joins forces with Colorado, New Mexico and three other tribes to help recover endangered fish species.
"It's not gonna be one of those fires where they can just go out and we hammer it and it's out in two or three days,” official says.
The electric scooters meet a car-free public transportation desire, but infrastructure shortcomings and lack of city preparedness cause issues.
Tests of a well at Sugar Loaf Fire Station 1 found levels 10 times above the EPA's health advisory levels.
As Garden of the Gods, Conundrum Hot Springs and Hanging Lake experience record visitors, park officials are scrambling for solutions.
The move effectively ends surface drilling in the city as Top Operating and Cub Creek Energy abandon several active wells and future drilling sites.