File name: Figure1_NP_SOS_GlacialMax_1x1_map_large.jpg
Original Resolution: 1400 × 1495
File Size: 565 KB (MIME Type: image/jpeg)
Roughly 20,000 years ago, during the Last Glacial Maximum of the Pleistocene Ice Age, ice spread over much of North America and Eurasia. (High-resolution without annotations available.) Image by Climate.gov based on data from the University of Zurich Applied Sciences, provided by Science on a Sphere.