Hike north on the Appalachian Trail and the scenery slowly transforms. Rugged, steep ridgelines in Tennessee and Virginia soften into the broad summits and smooth peaks of Pennsylvania and New Jersey.

A better understanding of the bedrock can help researchers calculate how quickly the continent's melting glaciers might ...

Costco is offering a new treat at its food courts that rivals the ever-popular McDonald's Shamrock Shake. (AP Photo) ...

We are only at the beginning of climate destabilization, in which winter weather grows more erratic and extreme.

Organizers from around the country are being trained by people in Minneapolis ...

Szűcsi, located in Heves County, Hungary, reveals a striking natural abstraction when viewed from above. Along its wetlands ...

stunning you with its rugged, picturesque beauty, the next day you will find yourself buried deep under thermal layers, as you witness the jagged ridgelines of the Himalayas wearing a crown of snow.

Glacier Bay National Park in Alaska is a vast wilderness shaped by ice, mountains, and time. Towering cliffs rise above ...

This is a typical icebreaker at work above the Arctic Circle, the fastest-warming place on Earth, a worrying environment that is changing and disappearing alarmingly fast. Much of it is an unfriendly ...

Author and historian whose studies of Antarctica provided an account of the human endeavour behind climate science ...

Add Yahoo as a preferred source to see more of our stories on Google. Are Trump's immigration policies still popular after the fatal ICE shootings in Minneapolis? Here's what the polls say. A bomb ...