In the frozen heights of Canada’s tallest peak, an international team of scientists launches a daring expedition to unearth thousands of years of climate data in one record-breaking ice core. Glaciologist and National Geographic Explorer Alison Criscitiello is the brain and brawn behind this ambitious quest. As she leads her team on a 10-day climb up the mountain, through whiteout conditions and precarious icefalls, Ali and her team defeat the... see more