New research reveals significant changes to the circulation of the North Pacific and its impact on the initial migration of humans from Asia to North America. The international study, led by the University of St. Andrews in Scotland and published Dec. 9 in Science Advances, provides a new picture of the circulation and climate of the […]
Most of the large animals that have walked the surface of Earth are no longer here. Why? Dan Mann thinks it’s because our recent climate has been too stable, at least when compared to the wacky ups and downs of the last ice age. Mann, a University of Alaska Fairbanks professor, presented his idea at […]
Image: This mummified ground squirrel, curled up at lower right in its nesting material, lived in Alaska about 20,000 years ago. Photo by Ben Gaglioti One fall day in Interior Alaska, a lion stalked a ground squirrel that stood at attention on a hillside. The squirrel noticed bending blades of grass, squeaked an alarm […]
New dating of rocks and reanalysis of animal bones from islands along the shore of southeastern Alaska suggests that a narrow corridor between the Pacific Ocean and the Cordilleran Ice Sheet (CIS) in Alaska may have enabled the migration of humans to the Americas as early as 17,000 years ago. While the data imply that […]