Sam Brasch

When two Colorado mountain towns considered steps to transition local homes and businesses away from fossil fuels, they ran into a powerful opponent: their local gas utility.

Methane is a greenhouse gas that often leaks from drilling sites and pipelines. A new satellite will hunt for methane leaks worldwide, which could significantly slow down global warming.

In most states, utility ratepayers subsidize the cost of extending service to a new customers. Colorado could join California in getting rid of the incentive as the states work to meet climate goals.

On Earth Day, Colorado climate activist Alan Bruce lit himself on fire outside the U.S. Supreme Court. He died of his injuries the next day. His friends and family say his intentions remain unclear.

Wildfires this week burned hundreds of homes in Colorado. Affected communities are taking stock of their losses and trying to make sense of a disaster that no one expected would occur in winter.

Colorado's governor has declared a state of emergency as winds are driving several large grass fires. Two towns in Boulder County have been evacuated with more than 20,000 people fleeing the fires.

Colorado is trying to fight both poverty and climate change by retrofitting low-income homes. Now the state set to get a big boost from the new federal infrastructure law.

Wildfires, and the scorched hillsides they leave behind, can threaten drinking water for years after the smoke clears. One Colorado community is trying to get ahead of the problem.

After years of frustration over air pollution, a petroleum refinery in Colorado agreed to a settlement. Nearby residents are spending some of that money to set up air monitors around the plant.

Evolving technology is making it possible to turn sewage wastewater into energy that can heat and cool large buildings. The largest such project in the U.S. is under construction in Denver.