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Judges at an annual competition in Keystone picked Denver's water as the best tasting. Louisville and Broomfield were also on the podium.

The Colorado River starts as mountain snow, but climate change has made it harder to predict how much will flow into streams every year. A new study says springtime sun, rain and plants could make it easier.

In Glen Canyon, home to Lake Powell, the shrinking reservoir has revealed areas that were once submerged. These scientists are counting the plants that live there, and have found that they're mostly native.

The Imperial Irrigation District in California is the Colorado River's largest water user. A new conservation plan will spend hundreds of millions to save water, but environmental advocates raised concerns.

Invasive zebra mussels could harm native fish and clog agricultural equipment. Until recently they had never before been seen in the stretch of the Colorado River near Grand Junction.

Negotiations over the water supply for 40 million people are hinged on how you interpret the words "will not cause," written into the century-old Colorado River Compact.

Front Range gas prices are lower than a year ago despite requirement for 鈥渞eformulated gas鈥� that reduces ozone-causing emissions.

New analysis on the top eight U.S. and European oil and gas producers documents how their climate pledges and plans fail to align with international agreements to phase out fossil fuels and to limit global temperature rise to 1.5潞C.

Comedians at a 鈥淪tand Up for Climate Comedy鈥� show hope global warming jokes will make climate a priority in the upcoming elections.

New research suggests that even minimal amounts of noise from recreation can trigger significant reactions in wildlife and that the type of activity doesn't necessarily make biggest difference in the animals' response.