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The Environmental Protection Agency is awarding the grants to 33 tribal nations and one U.S. territory. Recipients plan to apply the funding to reduce air pollution, transition to clean energy use, and promote environmental justice.

Air pollution can be two to five times worse indoors compared to outside, and it鈥檚 especially concerning for children, who tend to breathe in more air than adults in relation to their body weight.

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

The Colorado Air Pollution Control Division has missed its EPA deadline to rewrite permits for a Weld County oil and gas complex. A non-profit environmental group is threatening to sue the agency as a result. It contends the EPA and state regulators have failed to act quickly on the issue. The Colorado Sun editor David Krause joined KUNC's Michael Lyle, Jr. to get more on this story.

For the first time, the federal government is putting limits on 鈥渇orever chemicals鈥� called PFAS in the nation鈥檚 drinking water 鈥� a move that will protect communities across 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.

New research shows air quality gains in the U.S. have been cut by wildfire smoke. Scientists are sounding the alarm for change if the world wants to breathe clean air in the future.

The Environmental Protection Agency has removed protections from more than half of the country鈥檚 wetlands. The agency says the change is designed to comply with a recent U.S. Supreme Court ruling.

The Colorado Sun editor David Krause joined us to discuss Attorney General Phil Weiser鈥檚 lawsuit against the Environmental Protection Agency, plus a look back at 30 years with the Colorado Rockies.

Last month, the U.S. House proposed sweeping cuts to the upcoming budgets of the Interior Department and Environmental Protection Agency. Now, a Senate committee has restored most of what the agencies are asking for.