Geologists found evidence in the way enigmatic sandstones called Tava formed in the Rocky Mountains hundreds of millions of years ago.

Geologists discovered the evidence in the way enigmatic sandstones called Tava formed in the Rocky Mountains hundreds of millions of years ago.

Seven measures passed, three failed. What’s left behind is a mosaic of laws that can be hard to understand.

Colorado has spectacular scenery, but it comes with wild animals, and they sometimes wander into town. A ballot measure that would ban hunting wild cats is the latest test of public views on hunting.

Colorado has spectacular scenery, but it comes with wild animals, and they sometimes wander into town. A ballot measure that would ban hunting wild cats is the latest test of public views on hunting.

Decades-long environmental studies can reveal trends caused by climate change better than projects that last only a year or two.

Limiting damage from climate change means cutting fossil fuel use. Many towns that rely heavily on oil and gas production aren’t prepared for that future, as a former White House advisor explains.

Researchers found a sharp rise in calls to US poison centers about magic mushrooms coincided with their decriminalization in several US cities and states.

Numerous bats have been found in Colorado with white-nose syndrome. The fungus has killed millions of bats in North America, leaving biologists concerned about its impact on bats in the state.

A veterinarian and epidemiologist who studies infectious diseases in dairy cows discusses the outbreak, how cows recover and what the government is doing to keep the milk supply safe.