William R. Cotton, Colorado State University On mountain peaks scattered across Colorado, machines are set up to fire chemicals into the clouds in attempts to generate snow. The process is called cloud seeding, and as global temperatures rise, more countries and drought-troubled states are using it in sometimes desperate efforts to modify the weather. But […]

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Opinion: Devastating Colorado fires cap a year of climate disasters, with one side of the country too wet, the other too dry
By Shuang-Ye Wu, University of Dayton Alongside a lingering global pandemic, the year 2021 was filled with climate disasters, some so intense they surprised even the scientists who study them. Extreme rainstorms turned to raging flash floods that swept through mountain towns in Europe, killing over 200 people. Across Asia, excessive rainfall inundated wide areas and flooded subway stations in China. […]
Opinion: The science everyone needs to know about climate change, in 6 charts
By Betsy Weatherhead, University of Colorado With the United Nations’ climate conference in Scotland turning a spotlight on climate change policies and the impact of global warming, it’s useful to understand what the science shows. I’m an atmospheric scientist who has worked on global climate science and assessments for most of my career. Here are […]
Analysis: As Colorado River Basin states confront water shortages, it’s time to focus on reducing demand
By Robert Glennon, University of Arizona The U.S. government announced its first-ever water shortage declaration for the Colorado River on Aug. 16, 2021, triggering future cuts in the amount of water states will be allowed to draw from the river. The Tier 1 shortage declaration followed the U.S. Bureau of Reclamation’s forecast that the water […]
Opinion: 150 fire scientists urge the U.S. West to skip the fireworks this record-dry 4th of July
By Philip Higuera and Alexander L. Metcalf, The University of MontanaDave McWethy, Montana State Universityand Jennifer Balch, University of Colorado The heat wave hitting the northwestern U.S. and Canada has been shattering records, with temperatures 30 degrees Fahrenheit or more above normal. With drought already gripping the West, the intense heat has helped suck even […]
Opinion: Climate change is making Rocky Mountain forests more flammable now than at any time in the past 2,000 years
By Philip Higuera, The University of Montana; Bryan Shuman, University of Wyoming; and Kyra Wolf, The University of Montana The exceptional drought in the U.S. West has people across the region on edge after the record-setting fires of 2020. Last year, Colorado alone saw its three largest fires in recorded state history, one burning late […]