Exit Glacier is seen in the distance, behind a park sign depicting the Glacier face as seen in 2011, at Kenai Fjords National Park, Alaska, U.S. July 5, 2020. Picture taken July 5, 2020. REUTERS/Yereth Rosen

Hikers are seen at Harding Icefield in Kenai Fjords National Park, Alaska, U.S. July 15, 2017. Picture taken July 15, 2017. REUTERS/Yereth Rosen

Harding Icefield in Kenai Fjords National Park, Alaska, U.S. July 15, 2017. Picture taken July 15, 2017. REUTERS/Yereth Rosen

Hikers are seen at Harding Icefield in Kenai Fjords National Park, Alaska, U.S. August 5, 2018. Picture taken August 5, 2018. REUTERS/Yereth Rosen

A general view of a salmon fish farm in the Kvinnerahd fjord in Mauranger municipality in western Norway July 19, 2020. Picture taken July 19, 2020. REUTERS/Gwladys Fouche

A general view of a salmon fish farm in the Kvinnerahd fjord in Mauranger municipality in western Norway July 19, 2020. Picture taken July 19, 2020. REUTERS/Gwladys Fouche

A general view of a salmon fish farm in the Kvinnerahd fjord in Mauranger municipality in western Norway July 19, 2020. Picture taken July 19, 2020. REUTERS/Gwladys Fouche

A general view of a salmon fish farm in the Kvinnerahd fjord in Mauranger municipality in western Norway July 19, 2020. Picture taken July 19, 2020. REUTERS/Gwladys Fouche

A fishing vessel sails in the ice fjord near Ilulissat, Greenland September 12, 2017. Picture taken September 12, 2017. REUTERS/Jacob Gronholt-Pedersen

Boulder exposed by melt of Exit Glacier, in Kenai Fjords National Park, in Alaska, U.S., August 31, 2019. Picture taken August 31, 2019. REUTERS/Yereth Rosen

A sign marks where the end of the Exit glacier was in 2010 near tourists taking photos in the Kenai Fjords National Park, Alaska, U.S. August 31, 2019. Picture taken August 31, 2019. REUTERS/Yereth Rosen

Christiane Huebner plays with her dog Svea in front of her home in the town of Longyearbyen, in Svalbard, Norway, August 3, 2019. Three years ago, as winter approached, 13 meters of coastline fell away overnight, leaving Huebner's cabin perilously close to the fjord. Huebner, her family of three and their husky dogs abandoned the home. "It was a wake-up call since it happened very quickly," she says. They returned the following spring and had to relocate the cabin 80 meters from the shore. REUTERS/Hannah McKay SEARCH "SVALBARD CLIMATE" FOR THIS STORY. SEARCH "WIDER IMAGE" FOR ALL STORIES.

An abandoned house stands on the shore of a fjord near Tasiilaq, Greenland, June 16, 2018. REUTERS/Lucas Jackson SEARCH "JACKSON TASIILAQ" FOR THIS STORY. SEARCH "WIDER IMAGE" FOR ALL STORIES.

The snow-covered shore is reflected in the still water of a fjord near Tasiilaq, Greenland, June 16, 2018. REUTERS/Lucas Jackson SEARCH "JACKSON TASIILAQ" FOR THIS STORY. SEARCH "WIDER IMAGE" FOR ALL STORIES.

An iceberg floats in a fjord near the town of Tasiilaq, Greenland, June 18, 2018. REUTERS/Lucas Jackson SEARCH "POY GLOBAL" FOR FOR THIS STORY. SEARCH "REUTERS POY" FOR ALL BEST OF 2018 PACKAGES. TPX IMAGES OF THE DAY.

An iceberg floats in a fjord near the town of Tasiilaq, Greenland, June 18, 2018. REUTERS/Lucas Jackson SEARCH "POY GLOBAL" FOR FOR THIS STORY. SEARCH "REUTERS POY" FOR ALL BEST OF 2018 PACKAGES. TPX IMAGES OF THE DAY.

An iceberg floats in a fjord near the town of Tasiilaq, Greenland, June 18, 2018. REUTERS/Lucas Jackson SEARCH "JACKSON GREENLAND" FOR THIS STORY. SEARCH "WIDER IMAGE" FOR ALL STORIES. TPX IMAGES OF THE DAY

An iceberg floats in a fjord near the town of Tasiilaq, Greenland, June 18, 2018. REUTERS/Lucas Jackson SEARCH "JACKSON GREENLAND" FOR THIS STORY. SEARCH "WIDER IMAGE" FOR ALL STORIES. TPX IMAGES OF THE DAY

Tabular icebergs float in the Sermilik Fjord after a large calving event at the Helheim glacier near Tasiilaq, Greenland, June 23, 2018. REUTERS/Lucas Jackson

Tabular icebergs float in the Sermilik Fjord after a large calving event at the Helheim glacier near Tasiilaq, Greenland, June 23, 2018. REUTERS/Lucas Jackson

Water melts off of an iceberg as it floats in a fjord near Tasiilaq, Greenland, June 16, 2018. REUTERS/Lucas Jackson

An iceberg floats in a fjord near Tasiilaq, Greenland, June 16, 2018. REUTERS/Lucas Jackson

An iceberg floats in a fjord near Tasiilaq, Greenland, June 16, 2018. REUTERS/Lucas Jackson

An iceberg floats in a fjord near Tasiilaq, Greenland, June 16, 2018. REUTERS/Lucas Jackson

Water melts off of an iceberg as it floats in a fjord near Tasiilaq, Greenland, June 16, 2018. REUTERS/Lucas Jackson

An iceberg floats in a fjord near Tasiilaq, Greenland, June 16, 2018. REUTERS/Lucas Jackson

An iceberg floats in a fjord near the town of Tasiilaq, Greenland, June 24, 2018. REUTERS/Lucas Jackson

An iceberg floats in a fjord near the town of Tasiilaq, Greenland, June 24, 2018. REUTERS/Lucas Jackson

An iceberg floats in a fjord near the town of Tasiilaq, Greenland, June 19, 2018. REUTERS/Lucas Jackson

An iceberg floats in a fjord near Tasiilaq, Greenland, June 16, 2018. REUTERS/Lucas Jackson

The snow covered shore is reflected in the still water of a fjord near Tasiilaq, Greenland, June 16, 2018. REUTERS/Lucas Jackson

An iceberg floats in a fjord near Tasiilaq, Greenland, June 16, 2018. REUTERS/Lucas Jackson

The snow covered shore is reflected in the still water of a fjord near Tasiilaq, Greenland, June 16, 2018. REUTERS/Lucas Jackson

An iceberg floats in a fjord near the town of Tasiilaq, Greenland, June 18, 2018. REUTERS/Lucas Jackson

An iceberg floats in a fjord near the town of Tasiilaq, Greenland, June 24, 2018. REUTERS/Lucas Jackson SEARCH "JACKSON GREENLAND" FOR THIS STORY. SEARCH "WIDER IMAGE" FOR ALL STORIES. TPX IMAGES OF THE DAY

An iceberg floats in a fjord near the town of Tasiilaq, Greenland, June 18, 2018. REUTERS/Lucas Jackson SEARCH "JACKSON GREENLAND" FOR THIS STORY. SEARCH "WIDER IMAGE" FOR ALL STORIES.

Tabular icebergs float in the Sermilik Fjord after a large calving event at the Helheim glacier near Tasiilaq, Greenland, June 23, 2018. REUTERS/Lucas Jackson SEARCH "JACKSON GREENLAND" FOR THIS STORY. SEARCH "WIDER IMAGE" FOR ALL STORIES.

Tabular icebergs float in the Sermilik Fjord after a large calving event at the Helheim glacier near Tasiilaq, Greenland, June 23, 2018. This portion between the glacier front and the open ocean is known as the "melange" and is filled with ice, snow and icebergs packed together on their way to a fjord and later the ocean. REUTERS/Lucas Jackson SEARCH "JACKSON GREENLAND" FOR THIS STORY. SEARCH "WIDER IMAGE" FOR ALL STORIES. TPX IMAGES OF THE DAY

An iceberg floats in a fjord near the town of Tasiilaq, Greenland, June 24, 2018. REUTERS/Lucas Jackson SEARCH "JACKSON GREENLAND" FOR THIS STORY. SEARCH "WIDER IMAGE" FOR ALL STORIES.

An iceberg floats in a fjord near the town of Tasiilaq, Greenland, June 24, 2018. REUTERS/Lucas Jackson SEARCH "JACKSON GREENLAND" FOR THIS STORY. SEARCH "WIDER IMAGE" FOR ALL STORIES.

An iceberg floats in a fjord near the town of Tasiilaq, Greenland, June 24, 2018. REUTERS/Lucas Jackson SEARCH "JACKSON GREENLAND" FOR THIS STORY. SEARCH "WIDER IMAGE" FOR ALL STORIES.

An iceberg floats in a fjord near the town of Tasiilaq, Greenland, June 24, 2018. REUTERS/Lucas Jackson SEARCH "JACKSON GREENLAND" FOR THIS STORY. SEARCH "WIDER IMAGE" FOR ALL STORIES.

A general view of the construction site of the NordLink subsea interconnector power cable to connect Norway and Germany at the Vollesfjord fjord near Flekkefjord, Norway May 31, 2018. Picture taken May 31, 2018. REUTERS/Lefteris Karagiannopoulos

Workers on Nexans Skagerrak vessel lay a NordLink subsea interconnector power cable to connect Norway and Germany at the Vollesfjord fjord near Flekkefjord, Norway May 31, 2018. Picture taken May 31, 2018. REUTERS/Lefteris Karagiannopoulos

Workers on Nexans Skagerrak vessel lay a NordLink subsea interconnector power cable to connect Norway and Germany at the Vollesfjord fjord near Flekkefjord, Norway May 31, 2018. Picture taken May 31, 2018. REUTERS/Lefteris Karagiannopoulos

Workers lay a NordLink subsea interconnector power cable to connect Norway and Germany at the Vollesfjord fjord near Flekkefjord, Norway May 31, 2018. Picture taken May 31, 2018. REUTERS/Lefteris Karagiannopoulos

Workers lay a NordLink subsea interconnector power cable to connect Norway and Germany at the Vollesfjord fjord near Flekkefjord, Norway May 31, 2018. Picture taken May 31, 2018. REUTERS/Lefteris Karagiannopoulos

Workers on Nexans Skagerrak vessel lay a NordLink subsea interconnector power cable to connect Norway and Germany at the Vollesfjord fjord near Flekkefjord, Norway May 31, 2018. Picture taken May 31, 2018. REUTERS/Lefteris Karagiannopoulos

Workers on Nexans Skagerrak vessel lay a NordLink subsea interconnector power cable to connect Norway and Germany at the Vollesfjord fjord near Flekkefjord, Norway May 31, 2018. Picture taken May 31, 2018. REUTERS/Lefteris Karagiannopoulos

Workers lay a NordLink subsea interconnector power cable to connect Norway and Germany at the Vollesfjord fjord near Flekkefjord, Norway May 31, 2018. Picture taken May 31, 2018. REUTERS/Lefteris Karagiannopoulos

Workers on Nexans Skagerrak vessel lay a NordLink subsea interconnector power cable to connect Norway and Germany at the Vollesfjord fjord near Flekkefjord, Norway May 31, 2018. Picture taken May 31, 2018. REUTERS/Lefteris Karagiannopoulos

Workers on Nexans Skagerrak vessel lay a NordLink subsea interconnector power cable to connect Norway and Germany at the Vollesfjord fjord near Flekkefjord, Norway May 31, 2018. Picture taken May 31, 2018. REUTERS/Lefteris Karagiannopoulos

Workers lay a NordLink subsea interconnector power cable to connect Norway and Germany at the Vollesfjord fjord near Flekkefjord, Norway May 31, 2018. Picture taken May 31, 2018. REUTERS/Lefteris Karagiannopoulos

Workers on Nexans Skagerrak vessel lay a NordLink subsea interconnector power cable to connect Norway and Germany at the Vollesfjord fjord near Flekkefjord, Norway May 31, 2018. Picture taken May 31, 2018. REUTERS/Lefteris Karagiannopoulos

Workers on Nexans Skagerrak vessel lay a NordLink subsea interconnector power cable to connect Norway and Germany at the Vollesfjord fjord near Flekkefjord, Norway May 31, 2018. Picture taken May 31, 2018. REUTERS/Lefteris Karagiannopoulos

A general view of the construction site of the NordLink subsea interconnector power cable to connect Norway and Germany at the Vollesfjord fjord near Flekkefjord, Norway May 31, 2018. Picture taken May 31, 2018. REUTERS/Lefteris Karagiannopoulos

Workers lay a NordLink subsea interconnector power cable to connect Norway and Germany at the Vollesfjord fjord near Flekkefjord, Norway May 31, 2018. Picture taken May 31, 2018. REUTERS/Lefteris Karagiannopoulos

Workers lay a NordLink subsea interconnector power cable to connect Norway and Germany at the Vollesfjord fjord near Flekkefjord, Norway May 31, 2018. Picture taken May 31, 2018. REUTERS/Lefteris Karagiannopoulos

Workers lay a NordLink subsea interconnector power cable to connect Norway and Germany at the Vollesfjord fjord near Flekkefjord, Norway May 31, 2018. Picture taken May 31, 2018. REUTERS/Lefteris Karagiannopoulos