Last year, a uniquely skilled team of seven people — chosen for their uncommon combination of science, ice core drilling and high-alpine mountaineering expertise — commenced an ambitious expedition to ...

Dr. Alison Criscitiello takes in the view from the summit plateau of Mt. Logan, Kluane National Park and Reserve. | Leo Hoorn/National Geographic In Yukon, the smallest of Canada’s three territories, ...

Near the frozen, wind-buffeted summit of Mount Logan, Canada’s highest peak, lie some of the most ancient nonpolar ice deposits anywhere in the world. The glacial ice there—which, although unconfirmed ...