A mysterious malady has killed off nearly one-fifth of Colorado's aspens. But forest ecologists have struggled to explain the widespread die-off, known as Sudden Aspen Decline.
Sitting at a mile above sea level and in the shadow of the Rocky Mountains, Denver is known for having an extreme climate. But the most recent temperature swing ranked as one of the biggest ever observed.
At least 11 people were killed across Italy as a result of severe storms, authorities say.
Washington state Gov. Jay Inslee proclaimed a state of emergency Saturday for counties in the eastern part of the state
In other parts of the West, evacuation orders were lifted in Colorado and Montana towns threatened by wildfires
High elevation areas in Colorado received June snowfall.
Denver's hot weather keeps on sizzling, tying a record for consecutive 90-degree days in September.
Winter sports tourism pumps about $11 billion in direct spending into the U.S. economy each year but is at risk of being decimated by climate change, according to the advocacy group Protect Our Win…
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