greenhouse gases

Landfills are the nation’s third-largest source of methane, behind agriculture and fossil fuels. And a new study shows many landfills, including those in the Mountain West, are polluting the air even more than they are reporting.

During the pandemic, vehicle miles traveled, or driving rates, plummeted across the country. Now, not only are driving rates back up, but a new analysis shows Americans – including those in the Mountain West – are driving more than ever.

A new report shows air pollution is affecting most national parks across the U.S., including parts of the Mountain West.

Methane is a strong climate-warming pollutant. And a new study shows oil and gas operations in the Mountain West and beyond are leaking a lot more of it than the government thinks.

In the U.S., transportation is the biggest source of greenhouse gas emissions, according to the Environmental Protection Agency. A new report ranks which cities are doing the best job at driving down those emissions.

This week, a Montana judge sided with more than a dozen young activists who sued the state for violating their right to a clean environment by allowing fossil fuel development. The landmark case could have a ripple effect across the Mountain West and beyond.

Farming produces 10% of the nation’s greenhouse gas emissions, according to the U.S. Environmental Protection Agency. The U.S. Department of Agriculture is taking new steps to lower that number, but some experts warn it might not be enough.

A new survey shows most Americans support shifting to renewable energy sources like wind and solar. But many people oppose completely ending the use of fossil fuels.

As U.S. markets and policies move away from fossil fuels and toward renewables like wind and solar, a new ranking of the nation’s "greenest" states has only three Mountain West states cracking the top 25.

Despite all of the snow and cold snaps across the Mountain West, many cities are experiencing fewer nights at or below 32 degrees due to climate change. It’s a warming trend that has a wide range of impacts.