The unstable slopes reflect how the ice sheet eroded the deep fjords when it was larger. Now that the ice has melted, nothing buttresses the near-vertical valley walls, and so, they collapse.

Exploring a fjord sounds adventurous. The very idea of a deep waterway sandwiched by crazily steep cliffs makes you dizzy. There’s also the chance of crossing paths with a Viking. But visiting a ...

The National Park Service describes Kenai Fjords National Park in Alaska as the location “where mountains, ice and ocean meet.” This description provides you with a good idea of what you can see at ...

Forbes contributors publish independent expert analyses and insights. David Nikel is a travel writer covering cruising and Scandinavia.

Melting ice, thawing permafrost and crumbling fjord walls are just a few of the risks climate change poses for those living ...

Greenland has large deposits of rare earth minerals along its coasts, but these are also geologically hazardous regions. Alex Hibbert/The Image Bank via Getty Images ...