Jim Brandenburg / Arctic Wolf (Canis lupus) tracks in snow, Ellesmere Island, Nunavut Territories, Canada

Jim Brandenburg / Polar Bear (Ursus maritimus) crossing icefield during spring thaw, Ellesmere Island, Nunavut, Canada

Flip Nicklin / Polar Bear (Ursus maritimus) on icefield, Baffin Island, Nunavut, Canada

Michio Hoshino / Polar Bear (Ursus maritimus) pair quarreling on icefield, Churchill, Manitoba, Canada

Michio Hoshino / Polar Bear (Ursus maritimus) standing on icefield at sunset, Churchill, Manitoba, Canada

Jim Brandenburg / Columbia Icefield, Alberta, Canada

Jim Brandenburg / Blue ice pools in arctic icefield, Ellesmere Island, Nunavut, Canada

Michio Hoshino / Polar Bear (Ursus maritimus) pair walking across icefield, Churchill, Manitoba, Canada

Michio Hoshino / Polar Bear (Ursus maritimus) on icefield at sunset, Churchill, Manitoba, Canada

Michio Hoshino / Polar Bear (Ursus maritimus) pair on icefield, Churchill, Manitoba, Canada

Michio Hoshino / Polar Bear (Ursus maritimus) resting on icefield, Churchill, Manitoba, Canada

Michio Hoshino / Polar Bear (Ursus maritimus) laying on icefield, Churchill, Manitoba, Canada

Michio Hoshino / Polar Bear (Ursus maritimus) trio on icefield, Churchill, Manitoba, Canada

Michio Hoshino / Polar Bear (Ursus maritimus) walking across icefield, Churchill, Manitoba, Canada

Michio Hoshino / Polar Bear (Ursus maritimus) mother and two cubs crossing icefield, Churchill, Manitoba, Canada

Tim Fitzharris / Snow Dome and Dome Glacier, Mount Kitchener, Columbia Icefield, Jasper National Park, Alberta, Canada

Tim Fitzharris / Dome Glacier and Mount Kitchener reflected in pond, Jasper National Park, Alberta, Canada

Sergey Gorshkov / Polar Bear (Ursus maritimus) on field of pack ice, Wrangel Island, Russia

Hiroya Minakuchi / Gentoo Penguin (Pygoscelis papua) group marching, Antarctica

Hiroya Minakuchi / Glacier, Antarctic Peninsula, Antarctica

Hiroya Minakuchi / Glacier, Antarctic Peninsula, Antarctica

Hiroya Minakuchi / Glacier, Antarctic Peninsula, Antarctica

Hiroya Minakuchi / Glacier, Antarctic Peninsula, Antarctica

Tim Fitzharris / Dome Glacier and Mount Kitchener reflected in pond, Jasper National Park, Alberta, Canada

Tim Fitzharris / Dome Glacier and Mount Kitchener reflected in pond, Jasper National Park, Alberta, Canada

Matthias Breiter / Stikine Icecap near Petersburg, Tongass National Forest, Alaska

Jan Vermeer / Icefield at sunset, Antarctica

Jan Vermeer / Passengers of the icebreaker Kapitan Khlebnikov walking across icefield, Antarctica

Jan Vermeer / Icefield, Riiser-Larsen Ice Shelf, Antarctica

Jan Vermeer / Icefield with Emperor Penguins (Aptenodytes forsteri), Riiser-Larsen Ice Shelf, Antarctica

Michio Hoshino / Polar Bear (Ursus maritimus) trio running across icefield, Churchill, Manitoba, Canada

Jim Brandenburg / Ice climbers seen through ice cave, Columbia Icefield, Jasper National Park, Alberta, Canada

Jim Brandenburg / Aerial view of mountains and icefield in high Arctic, Ellesmere Island, Nunavut, Canada

Jim Brandenburg / Aerial view of mountains and icefield in high Arctic, Ellesmere Island, Nunavut, Canada

Jim Brandenburg / Ice climber crossing crevasse, Columbia Icefield, Jasper National Park, Alberta, Canada

Jim Brandenburg / Two ice climbers, Columbia Icefield, Alberta, Canada

Jim Brandenburg / Ice climber seen through ice cave, Columbia Icefield, Jasper National Park, Alberta, Canada

Michio Hoshino / Polar Bear (Ursus maritimus) walking across icefield at sunset, Churchill, Manitoba, Canada

Jim Brandenburg / Polar Bear (Ursus maritimus) on icefield, Ellesmere Island, Nunavut, Canada

Jim Brandenburg / Aerial view of sun reflecting on icefield, Ellesmere Island, Nunavut, Canada

Michio Hoshino / Polar Bear (Ursus maritimus) on icefield at sunset, Churchill, Manitoba, Canada

Michio Hoshino / Polar Bear (Ursus maritimus) crossing icefield at sunrise, Churchill, Manitoba, Canada

Frederique Olivier / Tracking shot of a large iceberg and a tourist boat passing by. An icefield can be seen in the background, Ilulissat, August, 2022.