Fires in Canada have sent smoke across several US states, leaving cities including New York, Chicago and Denver with some of the worst air quality in the world – even far from the flames.
Fires here can affect meltwater timing and water quality, worsen erosion that triggers mudslides, and much more, as two scientists explain.
Reservoirs and streams are in good shape in California and the Great Basin, but groundwater and ecosystems are another story. And then there’s the Colorado River Basin.
Less than a century ago, Colorado hunted, trapped and poisoned all the wolves within its borders. Today it’s restoring them – a change that reflects a profound shift in human thinking.
More homes are burning in wildfires in nearly every Western state. The reason? Humans.
Noxious smells and blowing ash initially made the homes unlivable. But even after their homes were cleaned, some residents still reported health effects months later.
While Sanders deftly played the game of Black respectability politics during his short tenure, Jackson State had motives of its own when it hired the former NFL star.
For the first time, researchers have been able to produce estimates of the rate of hate crimes against LGBTQ people.
The Supreme Court’s initial questions during the 303 Creative LLC v. Elenis opening arguments focused on whether the case might be premature, and what kind of discrimination is at play
Colorado is one of 19 states that have laws in place to prevent individuals believed to pose a threat from obtaining guns. But a preventive order needs to be petitioned before it can be issued.
From capillary forces to sand grain shape, the simple mix of sand and water hides the complexity within.
25 states aren’t expected to ban abortion if the Supreme Court overturns Roe v. Wade. But limits on abortion in these places, too, make it an uncertain refuge for people seeking abortions elsewhere.
Agreements negotiated a century ago to share water on Western rivers among states are showing their age in a time of water scarcity.
A pending bill in Colorado would disclose donor information to children and their parents and set limits on how many families can use a single individual’s egg or sperm.
Several states are experimenting with weather modification to try to generate snow as water supplies shrink. An atmospheric scientist explains the history behind it – and the challenges.
Colorado, Washington, Alaska and Oregon all experienced big increases in both deposits and lending shortly after legalizing marijuana for recreational use.
A hurricane that wreaked havoc from Louisiana to New York City, the Texas freeze and devastating western wildfires topped NOAA’s list of billion-dollar disasters in 2021.
A long-expected federal drought declaration underlines how serious the Colorado River water shortage has become for Western states.
More than 40 fire scientists and forest ecologists in the US and Canada teamed up to investigate why wildfires are getting more extreme. Climate change is part of the problem, but there’s more.
Scientists studied charcoal layers in the sediment of lake beds across the Rockies to track fires over time. They found increasing fire activity as the climate warmed.