'Watermelon snow' speeds Arctic melting

The pleasures (and pains) of Patagonia

9 of North America's most fascinating kettle lakes

The land that gravity forgot

11 alarming facts about sea-level rise

Finding peace with a pack, a trail and lots of time

What if our pain is a penguin's gain?

Fjords hoard more carbon than we thought

Majestic glaciers in Alaska: Then and now

New lakes discovered under Greenland's ice sheet

How Greenland got its glaciers

Models of Greenland's ice-melt may be too sunny