A person in a polar bear costume and activists of the Nuclear for Climate movement protest at the Sharm El-Sheikh International Convention Centre, during the COP27 climate summit, in Sharm el-Sheikh, Egypt, November 11, 2022. REUTERS/Mohamed Abd El Ghany 

People in costumes of polar bears and activists of the Nuclear for Climate movement protest at the Sharm El-Sheikh International Convention Centre, during the COP27 climate summit, in Sharm el-Sheikh, Egypt, November 11, 2022. REUTERS/Mohamed Abd El Ghany 

People in costumes of polar bears and activists of the Nuclear for Climate movement protest at the Sharm El-Sheikh International Convention Centre, during the COP27 climate summit, in Sharm el-Sheikh, Egypt, November 11, 2022. REUTERS/Mohamed Abd El Ghany 

People in costumes of polar bears react, as activists of the Nuclear for Climate movement protest at the Sharm El-Sheikh International Convention Centre, during the COP27 climate summit, in Sharm el-Sheikh, Egypt, November 11, 2022. REUTERS/Mohamed Abd El Ghany 

A person in a costume of a polar bear holds a banner, as activists of the Nuclear for Climate movement protest at the Sharm El-Sheikh International Convention Centre, during the COP27 climate summit, in Sharm el-Sheikh, Egypt, November 11, 2022. REUTERS/Mohamed Abd El Ghany 

A polar bear is seen in the city zoo following bombing, amid Russia's invasion of Ukraine, in Mykolaiv, Ukraine, April 8, 2022. REUTERS/Ueslei Marcelino 

Nadya Tolokonnikova, a member of Russian punk rock group Pussy Riot, stands for a photograph February 26, 2022. Picture taken February 26, 2022. REUTERS/Jeenah Moon 

Nadya Tolokonnikova, a member of Russian punk rock group Pussy Riot, sits for a photograph February 26, 2022. Picture taken February 26, 2022. REUTERS/Jeenah Moon 

Nadya Tolokonnikova, a member of Russian punk rock group Pussy Riot, stands for a photograph February 26, 2022. Picture taken February 26, 2022. REUTERS/Jeenah Moon 

Nadya Tolokonnikova, a member of Russian punk rock group Pussy Riot, sits for a photograph February 26, 2022. Picture taken February 26, 2022. REUTERS/Jeenah Moon 

Adelie penguins are seen as scientists investigate the impact of climate change on Antarctica's penguin colonies, on the eastern side of the Antarctic peninsula, Antarctica January 17, 2022. Picture taken January 17, 2022. REUTERS/Natalie Thomas 

Adelie penguins stand together as scientists investigate the impact of climate change on Antarctica's penguin colonies, on the eastern side of the Antarctic peninsula, Antarctica January 17, 2022. Picture taken January 17, 2022. REUTERS/Natalie Thomas 

Adelie penguins are seen as scientists investigate the impact of climate change on Antarctica's penguin colonies, on the eastern side of the Antarctic peninsula, Antarctica January 17, 2022. Picture taken January 17, 2022. REUTERS/Natalie Thomas 

Adelie penguins are seen standing together as scientists investigate the impact of climate change on Antarctica's penguin populations, on the eastern side of the Antarctic Peninsula, Antarctica, January 17, 2022. Picture taken January 17, 2022. REUTERS/Natalie Thomas 

A scientist stands near Adelie penguins while investigating the impact of climate change on Antarctica's penguin colonies, on the eastern side of the Antarctic peninsula, Antarctica January 16, 2022. Picture taken January 16, 2022. REUTERS/Natalie Thomas 

A scientist stands among Adelie penguins while investigating the impact of climate change on Antarctica's penguin colonies, on the eastern side of the Antarctic peninsula, Antarctica January 16, 2022. Picture taken January 16, 2022. REUTERS/Natalie Thomas 

Penguins are seen on a rock as scientists investigate the impact of climate change on Antarctica's penguin colonies, on the eastern side of the Antarctic peninsula, Antarctica January 16, 2022. Picture taken January 16, 2022. REUTERS/Natalie Thomas 

Scientists work near Adelie penguins while investigating the impact of climate change on Antarctica's penguin colonies, on the eastern side of the Antarctic peninsula, Antarctica January 16, 2022. Picture taken January 16, 2022. REUTERS/Natalie Thomas 

An Adelie penguin stands on a rock as scientists investigate the impact of climate change on Antarctica's penguin populations, on the eastern side of the Antarctic Peninsula, Antarctica, January 16, 2022. Picture taken January 16, 2022. REUTERS/Natalie Thomas 

Scientists walk among a colony of Adelie penguins while investigating the impact of climate change on Antarctica's penguin populations, on the eastern side of the Antarctic Peninsula, Antarctica, January 16, 2022. Picture taken January 16, 2022. REUTERS/Natalie Thomas 

Penguins are seen on an iceberg as scientists investigate the impact of climate change on Antarctica's penguin colonies, on the northern side of the Antarctic peninsula, Antarctica January 15, 2022. Picture taken January 15, 2022. REUTERS/Natalie Thomas 

Penguins swim in the sea as scientists investigate the impact of climate change on Antarctica's penguin colonies, on the northern side of the Antarctic peninsula, Antarctica January 15, 2022. Picture taken January 15, 2022. REUTERS/Natalie Thomas 

Penguins are seen on an iceberg as scientists investigate the impact of climate change on Antarctica's penguin colonies, on the northern side of the Antarctic peninsula, Antarctica January 15, 2022. Picture taken January 15, 2022. REUTERS/Natalie Thomas 

A polar bear cools off during a hot summer day in its enclosure at the Moscow Zoo in Moscow, Russia July 12, 2021. REUTERS/Tatyana Makeyeva 

A polar bear cools off during a hot summer day in its enclosure at the Moscow Zoo in Moscow, Russia July 12, 2021. REUTERS/Tatyana Makeyeva 

A polar bear cools off during a hot summer day in its enclosure at the Moscow Zoo in Moscow, Russia July 12, 2021. REUTERS/Tatyana Makeyeva 

A visitor is reflected in a glass as a polar bear cools off during a hot summer day in its enclosure at the Moscow Zoo, in Moscow, Russia July 12, 2021. REUTERS/Tatyana Makeyeva 

A polar bear cools off during a hot summer day in its enclosure at the Moscow Zoo, in Moscow, Russia July 12, 2021. REUTERS/Tatyana Makeyeva 

A polar bear cools off during a hot summer day in its enclosure at the Moscow Zoo, in Moscow, Russia July 12, 2021. REUTERS/Tatyana Makeyeva 

A polar bear cools off during a hot summer day in its enclosure at the Moscow Zoo, in Moscow, Russia July 12, 2021. REUTERS/Tatyana Makeyeva 

Atmospheric physicist and leader of the MOSAiC expedition Markus Rex chats with German Minister for Education and Research Anja Karliczek after a news conference presenting the initial results of the MOSAiC expedition, the largest scientific undertaking in the polar region to date, in Berlin, Germany June 15, 2021. John MacDougall/Pool via REUTERS 

Atmospheric physicist and leader of the MOSAiC expedition Markus Rex addresses a news conference presenting the initial results of the MOSAiC expedition, the largest scientific undertaking in the polar region to date, in Berlin, Germany June 15, 2021. John MacDougall/Pool via REUTERS 

Sea ice physicist and expedition participant Stefanie Arndt, atmospheric physicist and leader of the MOSAiC expedition Markus Rex and Germany's Minister for Education and Research Anja Karliczek pose with a placard showing a picture of the German icebreaker and research vessel "Polarstern" and a text reading 'Global Temperature rise' before a news conference presenting the initial results of the MOSAiC expedition, the largest scientific undertaking in the polar region to date, in Berlin, Germany June 15, 2021. John MacDougall/Pool via REUTERS 

Sea ice physicist and expedition participant Stefanie Arndt, atmospheric physicist and leader of the MOSAiC expedition Markus Rex and Germany's Minister for Education and Research Anja Karliczek pose with a placard showing a picture of the German icebreaker and research vessel "Polarstern" and a text reading 'Global Temperature rise' before a news conference presenting the initial results of the MOSAiC expedition, the largest scientific undertaking in the polar region to date, in Berlin, Germany June 15, 2021. John MacDougall/Pool via REUTERS 

Atmospheric physicist and leader of the MOSAiC expedition Markus Rex addresses a news conference presenting the initial results of the MOSAiC expedition, the largest scientific undertaking in the polar region to date, in Berlin, Germany June 15, 2021. John MacDougall/Pool via REUTERS 

Atmospheric physicist and leader of the MOSAiC expedition Markus Rex and expedition participant Stefanie Arndt attend a news conference presenting the initial results of the MOSAiC expedition, the largest scientific undertaking in the polar region to date, in Berlin, Germany June 15, 2021. John MacDougall/Pool via REUTERS 

Germany Minister for Education and Research Anja Karliczek addresses a news conference presenting the initial results of the MOSAiC expedition, the largest scientific undertaking in the polar region to date, in Berlin, Germany June 15, 2021. John MacDougall/Pool via REUTERS 

Sea ice physicist and MOSAiC expedition participant Stefanie Arndt addresses a news conference presenting the initial results of the MOSAiC expedition, the largest scientific undertaking in the polar region to date, in Berlin, Germany June 15, 2021. John MacDougall/Pool via REUTERS 

Sea ice physicist and MOSAiC expedition participant Stefanie Arndt attends a news conference presenting the initial results of the MOSAiC expedition, the largest scientific undertaking in the polar region to date, in Berlin, Germany June 15, 2021. John MacDougall/Pool via REUTERS 

Sea ice physicist and MOSAiC expedition participant Stefanie Arndt addresses a news conference presenting the initial results of the MOSAiC expedition, the largest scientific undertaking in the polar region to date, in Berlin, Germany June 15, 2021. John MacDougall/Pool via REUTERS 

Germany Minister for Education and Research Anja Karliczek addresses a news conference presenting the initial results of the MOSAiC expedition, the largest scientific undertaking in the polar region to date, in Berlin, Germany June 15, 2021. John MacDougall/Pool via REUTERS 

Germany Minister for Education and Research Anja Karliczek addresses a news conference presenting the initial results of the MOSAiC expedition, the largest scientific undertaking in the polar region to date, in Berlin, Germany June 15, 2021. John MacDougall/Pool via REUTERS 

Atmospheric physicist and leader of the MOSAiC expedition Markus Rex addresses a news conference presenting the initial results of the MOSAiC expedition, the largest scientific undertaking in the polar region to date, in Berlin, Germany June 15, 2021. John MacDougall/Pool via REUTERS 

Atmospheric physicist and leader of the MOSAiC expedition Markus Rex addresses a news conference presenting the initial results of the MOSAiC expedition, the largest scientific undertaking in the polar region to date, in Berlin, Germany June 15, 2021. John MacDougall/Pool via REUTERS 

Sea ice physicist and MOSAiC expedition participant Stefanie Arndt addresses a news conference presenting the initial results of the MOSAiC expedition, the largest scientific undertaking in the polar region to date, in Berlin, Germany June 15, 2021. John MacDougall/Pool via REUTERS 

People gather near an illuminated installation depicting polar bears ahead of the New Year and Christmas holiday season in a park in Moscow, Russia December 28, 2020. REUTERS/Evgenia Novozhenina TPX IMAGES OF THE DAY 

A group of chinstrap penguins walk on top of an iceberg floating near Lemaire Channel, Antarctica, February 6, 2020. REUTERS/Ueslei Marcelino/File Photo TPX IMAGES OF THE DAY SEARCH "GLOBAL POY" FOR THIS STORY. SEARCH "REUTERS POY" FOR ALL BEST OF 2020 PACKAGES. 

A man records in Times Square during a brief snow flurry as a polar vortex brought cold temperatures to the region in the Manhattan borough of New York City, U.S., May 9, 2020. REUTERS/Andrew Kelly 

A woman walks in Times Square as a polar vortex brought cold temperatures to the region in the Manhattan borough of New York City, U.S., May 9, 2020. REUTERS/Andrew Kelly 

A man cycles through Times Square during a snow flurry as a polar vortex brought cold temperatures to the region in the Manhattan borough of New York City, U.S., May 9, 2020. REUTERS/Andrew Kelly 

People walk in Times Square as a polar vortex brought cold temperatures to the region in the Manhattan borough of New York City, U.S., May 9, 2020. REUTERS/Andrew Kelly 

A man walks through the Times Square area during a snow flurry as a polar vortex brought cold temperatures to the region in the Manhattan borough of New York City, U.S., May 9, 2020. REUTERS/Andrew Kelly TPX IMAGES OF THE DAY 

A picture taken from the Montenvers railway station near Chamonix, at the Mont Blanc mountain range in the French Alps, February 13, 2020. Ludovic Marin/Pool via REUTERS 

A picture taken Montenvers railway station shows Chamonix valley, at the Mont Blanc mountain range in the French Alps, February 13, 2020. Ludovic Marin/Pool via REUTERS 

A picture taken from the Montenvers railway station near Chamonix, at the Mont Blanc mountain range in the French Alps, February 13, 2020. Ludovic Marin/Pool via REUTERS 

A picture taken from the Montenvers railway station near Chamonix, at the Mont Blanc mountain range in the French Alps, February 13, 2020. Ludovic Marin/Pool via REUTERS 

An iceberg floats near Two Hummock Island, Antarctica, February 2, 2020. Picture taken February 2, 2020. REUTERS/Ueslei Marcelino 

Greenpeace activist Serkan Dadak plays a musical instrument aboard the Esperanza ship near Drake Passage, Antarctica, February 9, 2020. Picture taken February 9, 2020. REUTERS/Ueslei Marcelino 

Icebergs are seen out of a window of the Esperanza Ship near Orne Harbour, Antarctica, February 6, 2020. Picture taken February 6, 2020. REUTERS/Ueslei Marcelino 

An iceberg floats near Lemaire Channel, Antarctica, February 5, 2020. Picture taken February 5, 2020. REUTERS/Ueslei Marcelino