Climate change is major election issue for Democrats, but not Republicans. Yet polls show many young conservatives are concerned about climate impacts, and some are lobbying for solutions.
The country's largest coal producing state is desperate to keep the struggling industry going. Wyoming is investing big to try to clean up coal's carbon emissions, even as many say it's too late.
Even beyond wildfire smoke, the air this summer has been more dangerous for millions of Americans. That's because of the warming climate, which threatens to roll back decades of improving air quality.
Extreme fires are more likely with climate change, and they're making it harder for some tree species to regenerate. Ecologists say this could transform large areas of Western forest into grassland.
Human activities are causing an "unprecedented" and alarming decline in wildlife populations around the world, a new report warns. It says the staggering loss ultimately threatens human life as well.
Parts of the Front Range hit 100 degrees over the weekend, then woke up to snow on Tuesday. Meteorologists will track whether the enormous swing set a new record in the U.S.
In 13 U.S. cities this summer, volunteers are capturing detailed measurements that will include the heat index people experience. Cities will use the new heat maps to help cool the hottest spots.
The Trump administration had been moving ahead with the controversial Pebble Mine. That appears to have changed after public opposition from some key Republicans worried about a salmon fishery.
The rule ends Obama-era restrictions on emissions of methane, a potent climate-warming gas. The move could make it harder to argue that natural gas is a cleaner-burning fossil fuel than coal.
Visits to Yellowstone National Park are higher than last year as Americans look to escape their pandemic confines. Their business is welcome relief, despite worries they'll also bring coronavirus.
Proposed new emergency preparedness rules would allow nuclear plants closer to where people live. Companies say the plants are safer, but they need the rule changes for a viable business model.
Power shut-off moratoriums imposed at the start of the pandemic are beginning to expire. Customers and utilities face a backlog of missed bills that may eventually be passed on to ratepayers.
President Trump is making major changes to a bedrock environmental law that he says will help the economy. Critics say the move will sideline input from communities affected by polluting projects.
