To catch up with University of Maine paleoclimatologist Karl Kreutz and his team, we hopped on a plane rigged with skis that landed right on the Ruth Glacier in the heart of the Denali National Park.

为了赶上缅因大学古气候学家 Karl Kreutz 和他的团队，我们跳上了一架装有滑雪板的飞机，飞机正好降落在 Denali 国家公园中心的露丝冰川上。