Colorado’s top outdoor destinations go head-to-head in this March Madness inspired bracket. From mountain peaks to hidden ...

As college basketball players vie for one shining moment, we imagine an impossible challenge between some of Colorado’s ...

When a team of archaeologists followed an ancient trail marked by stone cairns to the top of a mountain in Norway, they weren ...

NASA's Landsats captured views of a Swiss glacier 40 years apart, showing how a warming world has reduced its footprint.

If the landslide at the Barry Arm fjord collapses, its falling ice and rock could generate a devastating 650-foot-high ...

You don't have to travel far to see some of the world's most stunning natural wonders. From shimmering turquoise lakes to majestic mountaintops, these are the places in each state that are sure to ...

This is the story of early expeditions to British Columbia's Mount Waddington, known as the Mystery Mountain because of its ...

Saul Luciano Lliuya grows corn, potatoes and quinoa. In winter, he takes tourists up to the icy heights of the Peruvian Andes.   Now the farmer from the mountain village of Huaraz is in the global ...

The case could set a precedent for future climate litigation by holding companies accountable for past emissions and requiring them to help fund climate adaptation for affected communities ...

It feels arrogant and obnoxious to rename the Gulf of Mexico and suggest we need to take over Greenland and the Panama Canal.

Melting at an alarming rate, this majestic sight is forcing both scientists and locals to quickly adapt in a changing world A ...