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4. Alaska’s Brooks Range
40 Stunning Images of Our Planet by NASA

NASA’s Operation IceBridge images Earth's polar ice in unprecedented detail to better understand processes that connect the polar regions with the global climate system. IceBridge utilizes a highly specialized fleet of research aircraft and the most sophisticated suite of innovative science instruments ever assembled to characterize annual changes in thickness of sea ice, glaciers, and ice sheets.

Mountains in Alaska’s Brooks Range seen during the IceBridge survey flight from Thule, Greenland to Fairbanks, Alaska.
Image Credit: NASA / Michael Studinger