The Colorado School of Mines study didn't do real-world tests, but state health monitors say they will pay closer attention in sampling
Colorado releases its plan to slash greenhouse gases, leaving some environmental groups wanting moreMark Jaffe
Is Colorado leading or lagging on climate policy? It depends on which states you’re comparing us to.Mark Jaffe Environment Primary category in which blog post is published
Fight over Colorado setback rule sets up make-or-break hearing on how close is too close for oil and gasMark Jaffe Energy Primary category in which blog post is published
Colorado must cut half of its greenhouse gas emissions by 2030. It will lean on oil and gas to do it.Mark Jaffe Energy Primary category in which blog post is published
Drafting rules to reduce Colorado’s greenhouse gas emissions may prove even harder because of missing data
The state's Air Quality Control Commission doesn’t expect new rules to be in place for another year
Colorado may have missed a deadline to plan for reducing greenhouse gasses. Now the state faces a lawsuit.
Some critics say what is lacking is a lead from Gov. Jared Polis
Air quality improved slightly during the stay-at-home order. But Colorado still has a serious pollution problem.
Officials have until June 2021 to meet a ground-level ozone compliance deadline set by the federal Environmental Protection Agency.
A bill to regulate harmful “forever chemicals” that contaminate groundwater was chopped in half during its first public hearing
Last year, Colorado legislators pushed for stricter environmental protection. This year, they want everyone to benefit from the solutions.