Five questions with UCLA climate scientist Daniel Swain, who warned of “extreme fire danger” in Southern California days ...

New data from 2.5 million marathon finishers finds that subtle changes in air quality can affect your race time ...

If you plan to spend multiple, consecutive days in the same pair of socks this winter, socks with high wool content are the ...

When our trail columnist first started sliding silicone spacers between his toes, friends chuckled. But now these little ...

In last days of his presidency, Biden adds more protected sites to a long list of conservation accomplishments ...

A team of wildlife experts and ice climbers worked to rescue a bull elk that became tangled in a climbing rope at Colorado’s ...

The EXPLORE Act aims to address the housing crisis in gateway communities, increase outdoor access for veterans, kids, and ...

Ben Patrick is better known as the Knees Over Toes guy: a viral internet personality who believes that the oldest rule in the weight-training book is dead wrong. Our writer tried his protocol to see ...

In early August, on the shoulder of Colorado’s highest peak, 14,439-foot Mount Elbert, I suddenly found myself unable to do anything except apologize. I had started up the mountain so early ...

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