Geography

Pieter Strauss used to love hosting stargazing parties at his house in the Lakeshore Park neighborhood up Flagstaff Road southwest of Boulder. The hobbyist...

Colorado joins three other states in approving a new rule that clears the way for drinking treated wastewater.

Colorado voters have narrowly passed a measure that will legalize sports betting and use the taxes raised to fund projects outlined in the Colorado Water Plan.

Seven states in the West have been given until August 15th to implement new strategies and tools to conserve the Colorado River.

The Colorado River has been dammed, diverted, and slowed by reservoirs, strangling the life out of a once-thriving ecosystem. But in the U.S. and Mexico, efforts are underway to revive sections of the river and restore vital riparian habitat for native plants, fish, and wildlife.

This photo gallery features images shot during a Lighthawk flight to the Colorado River headwaters and surrounding areas. The flight began at Rocky Mountain...

States say automatically turning to agriculture isn’t always reliable

A proposed hydroelectric project on the Little Colorado River shows the tricky trade-offs in transitioning from fossil fuels.

This page features aerial images of Lake Mead and Hoover Dam, along the Colorado River near Las Vegas, Nevada. Lake Mead is the nation's largest...

California pistachio farmers are facing off against the U.S. Navy over water rights. The outcome could shape future legal fights as climate change upends the status quo.