The dipterocarp forests of Sabah in Malaysian Borneo are home to some of the world’s tallest trees, with some Shorea species reaching over eighty meters in height. This scene, from the lower elevations of the nearly undisturbed Maliau Basin, is what we may imagine when thinking of pristine mature forests – immense cylindrical boles reaching…

A human may walk some dozens of kilometers on a day’s ration of food. We store enough energy in our fat and muscle cells to walk additional hundreds of kilometres. Ultimately we burn through our stores and must stop. A hummingbird must eat every day, while a snake may go months between meals. Our machines…

Before I came to the Norwegian mountains, I imagined them in a muted palette of grays and browns – heath, tundra, and rock. These were stereotypes, but not ones I found to be groundless after the experiences of a cold and foggy field season, and of hiking to the bare summits of more than a…

I ran into an old friend five thousand miles from home last weekend. But the story actually starts several years ago when I first began exploring the Rocky Mountains. Near my research sites there was one peak visible to the north, higher than all the others: the Treasure Mountain massif. And I had never climbed…