Iditarod winner Ryan Redington, whose grandfather Joe Redington Sr. is known as the founding father of the Iditarod Trail Sled Dog race, poses under the burled arch with his lead dogs Ghost and Sven at the finish line in Nome, Alaska, U.S. March 14, 2023. The Nome Nugget/Diana Haecker via REUTERS 

Musher Eric Kelly reacts during the official start of the 51st Iditarod Trail Sled Dog Race in Willow, Alaska, U.S. March 5, 2023. REUTERS/Kerry Tasker 

Musher Jason Mackey prepares during the official start of the 51st Iditarod Trail Sled Dog Race in Willow, Alaska, U.S. March 5, 2023. REUTERS/Kerry Tasker 

Musher Joanna Jagow and his dog team participate during the official start of the 51st Iditarod Trail Sled Dog Race in Willow, Alaska, U.S. March 5, 2023. REUTERS/Kerry Tasker 

Musher Ramey Smyth and his dog team participate during the official start of the 51st Iditarod Trail Sled Dog Race in Willow, Alaska, U.S. March 5, 2023. REUTERS/Kerry Tasker 

Musher Brent Sass and his dog team participate during the official start of the 51st Iditarod Trail Sled Dog Race in Willow, Alaska, U.S. March 5, 2023. REUTERS/Kerry Tasker 

Musher Kelly Maixner and his dog team participate during the official start of the 51st Iditarod Trail Sled Dog Race in Willow, Alaska, U.S. March 5, 2023. REUTERS/Kerry Tasker 

Musher Christian Turner waves to onlookers during the official start of the 51st Iditarod Trail Sled Dog Race in Willow, Alaska, U.S. March 5, 2023. REUTERS/Kerry Tasker 

Musher Kristy Berington attaches a harness to one of her dogs during the official start of the 51st Iditarod Trail Sled Dog Race in Willow, Alaska, U.S. March 5, 2023. REUTERS/Kerry Tasker 

Musher Riley Dyche gives a high-five to a spectator during the ceremonial start of the 51st Iditarod Trail Sled Dog Race in Anchorage, Alaska, U.S. March 4, 2023. REUTERS/Kerry Tasker 

Musher Kelly Maixner helps redirect his dogs during the ceremonial start of the 51st Iditarod Trail Sled Dog Race in Anchorage, Alaska, U.S. March 4, 2023. REUTERS/Kerry Tasker 

Musher Brent Sass turns during the ceremonial start of the 51st Iditarod Trail Sled Dog Race in Anchorage, Alaska, U.S. March 4, 2023. REUTERS/Kerry Tasker 

Musher Bailey Vitello checks his dogs during the ceremonial start of the 51st Iditarod Trail Sled Dog Race in Anchorage, Alaska, U.S. March 4, 2023. REUTERS/Kerry Tasker 

Musher Jessie Holmes waves to onlookers during the ceremonial start of the 51st Iditarod Trail Sled Dog Race in Anchorage, Alaska, U.S. March 4, 2023. REUTERS/Kerry Tasker 

Musher Gregg Vitello during the ceremonial start of the 51st Iditarod Trail Sled Dog Race in Anchorage, Alaska, U.S. March 4, 2023. REUTERS/Kerry Tasker 

Musher Kristy Berington during the ceremonial start of the 51st Iditarod Trail Sled Dog Race in Anchorage, Alaska, U.S. March 4, 2023. REUTERS/Kerry Tasker TPX IMAGES OF THE DAY 

Musher Dan Kaduce's dog team during the ceremonial start of the 51st Iditarod Trail Sled Dog Race in Anchorage, Alaska, U.S. March 4, 2023. REUTERS/Kerry Tasker 

A musher is pulled by a team of dogs during a sled dog racing competition in a forest on the suburbs of the Siberian city of Krasnoyarsk, Russia, February 12, 2023. REUTERS/Alexander Manzyuk 

A musher is pulled by a team of dogs during a regional sled dog racing competition outside Omsk, Russia, February 4, 2023. REUTERS/Alexey Malgavko TPX IMAGES OF THE DAY 

The sea ice is everything to the people who live in Nain. The tiny town on the Newfoundland and Labrador coast is on the frontline of climate change. As the sea ice melts, the Inuit are racing to adapt. Rex Holwell has spent his life on the sea ice that forms each winter off the coast of Newfoundland and Labrador. Like other Inuit, he learned to hunt seals and fish from his father and other men. They would skim over the sea ice, first on dog sleds and then, by the time Holwell started accompanying them, on gasoline-powered skidoos. Holwell wants this life ? and freedom ? for his children. REUTERS/Melissa Renwick SEARCH "RENWICK SMARTICE" FOR THIS STORY. SEARCH "WIDER IMAGE" FOR ALL STORIES. 

Veteran musher Brent Sass of Eureka, Alaska holds his lead dogs Slater and Morello after winning his first Iditarod Trail Sled Dog Race championship in Nome, Alaska, U.S. March 15, 2022. Sass won his first championship in his seventh time competing. REUTERS/Diana Haecker/The Nome Nugget 

Veteran musher Brent Sass of Eureka, Alaska speaks to the crowd after winning his first Iditarod Trail Sled Dog Race championship in Nome, Alaska, U.S. March 15, 2022. Sass won his first championship in his seventh time competing. REUTERS/Diana Haecker/The Nome Nugget 

Veteran musher Brent Sass of Eureka, Alaska, crosses the finish line of the 50th running of the Iditarod at 5:38 a.m. local time, claiming his first Iditarod Trail Sled Dog Race championship in Nome, Alaska, U.S. March 15, 2022. Sass won his first championship in his seventh time competing. REUTERS/Diana Haecker/The Nome Nugget 

Veteran musher Brent Sass of Eureka, Alaska, crosses the finish line of the 50th running of the Iditarod at 5:38 a.m. local time, claiming his first Iditarod Trail Sled Dog Race championship in Nome, Alaska, U.S. March 15, 2022. Sass won his first championship in his seventh time competing. REUTERS/Diana Haecker/The Nome Nugget 

Veteran musher Brent Sass of Eureka, Alaska holds his lead dogs Slater and Morello after winning his first Iditarod Trail Sled Dog Race championship in Nome, Alaska, U.S. March 15, 2022. Sass won his first championship in his seventh time competing. REUTERS/Diana Haecker/The Nome Nugget 

Veteran musher Brent Sass of Eureka, Alaska puts booties on his dogs in preparation for the 11-mile untimed ceremonial start of the Iditarod Dog Sled Race in Anchorage, Alaska, U.S. March 5, 2022. Sass won his first championship in his seventh time competing. Picture taken March 5, 2022. REUTERS/Yereth Rosen 

Musher Joar Leifseth Ulsom of Norway, the 2018 race champion, gets a coronavirus disease (COVID-19) test at the downtown Anchorage ceremonial start of the 50th Iditarod Trail Sled Dog Race. Mushers are required to be vaccinated and are to be tested at every checkpoint , Alaska, United States March 5, 2022 REUTERS/Yereth Rosen 

Four-time champion Jeff King drives Nic Petit's dog team through wet, slushy snow to the start line at the Anchorage ceremonial start of the 50th Iditarod Trail Sled Dog Race. Petit, a French musher who lives in Alaska, tested positive for coronavirus disease (COVID-19) and King, who had not planned to race this year, stepped in as a substitute musher in Anchorage, Alaska, United States March 5, 2022 REUTERS/Yereth Rosen 

Four-time champion Jeff King drives Nic Petit's dog team through wet, slushy snow to the start line at the Anchorage ceremonial start of the 50th Iditarod Trail Sled Dog Race. Petit, a French musher who lives in Alaska, tested positive for coronavirus disease (COVID-19) and King, who had not planned to race this year, stepped in as a substitute musher in Anchorage, Alaska, United States March 5, 2022 REUTERS/Yereth Rosen 

Jessie Holmes during the ceremonial start of the 50th Iditarod Trail Sled Dog Race in Anchorage, Alaska, U.S. March 5, 2022. REUTERS/Kerry Tasker 

Dallas Seavey at the ceremonial start of the 50th Iditarod Trail Sled Dog Race in Anchorage, Alaska, U.S. March 5, 2022. REUTERS/Kerry Tasker 

Brent Sass during the ceremonial start of the 50th Iditarod Trail Sled Dog Race in Anchorage, Alaska, U.S. March 5, 2022. REUTERS/Kerry Tasker 

Brent Sass during the ceremonial start of the 50th Iditarod Trail Sled Dog Race in Anchorage, Alaska, U.S. March 5, 2022. REUTERS/Kerry Tasker 

Martin Buser during the ceremonial start of the 50th Iditarod Trail Sled Dog Race in Anchorage, Alaska, U.S. March 5, 2022. REUTERS/Kerry Tasker 

Mitch Seavey during the ceremonial start of the 50th Iditarod Trail Sled Dog Race in Anchorage, Alaska, U.S. March 5, 2022. REUTERS/Kerry Tasker 

Sebastien Dos Santos Borges's dogs running during the ceremonial start of the 50th Iditarod Trail Sled Dog Race in Anchorage, Alaska, U.S. March 5, 2022. REUTERS/Kerry Tasker 

Apayauq Reitan during the ceremonial start of the 50th Iditarod Trail Sled Dog Race in Anchorage, Alaska, U.S. March 5, 2022. REUTERS/Kerry Tasker 

Travis Beals during the ceremonial start of the 50th Iditarod Trail Sled Dog Race in Anchorage, Alaska, U.S. March 5, 2022. REUTERS/Kerry Tasker 

Matt Paveglio tossing candy to onlookers during the ceremonial start of the 50th Iditarod Trail Sled Dog Race in Anchorage, Alaska, U.S. March 5, 2022. REUTERS/Kerry Tasker 

Matt Paveglio during the ceremonial start of the 50th Iditarod Trail Sled Dog Race in Anchorage, Alaska, U.S. March 5, 2022. REUTERS/Kerry Tasker 

Yuka Honda during the ceremonial start of the 50th Iditarod Trail Sled Dog Race in Anchorage, Alaska, U.S. March 5, 2022. REUTERS/Kerry Tasker 

Aaron Burmeister during the ceremonial start of the 50th Iditarod Trail Sled Dog Race in Anchorage, Alaska, U.S. March 5, 2022. REUTERS/Kerry Tasker 

Riley Dyche’s dog team during the ceremonial start of the 50th Iditarod Trail Sled Dog Race in Anchorage, Alaska, U.S. March 5, 2022. REUTERS/Kerry Tasker TPX IMAGES OF THE DAY 

Dallas Seavey during the ceremonial start of the 50th Iditarod Trail Sled Dog Race in Anchorage, Alaska, U.S. March 5, 2022. REUTERS/Kerry Tasker 

Hanna Lyrek during the ceremonial start of the 50th Iditarod Trail Sled Dog Race in Anchorage, Alaska, U.S. March 5, 2022. REUTERS/Kerry Tasker 

Paige Drobny during the ceremonial start of the 50th Iditarod Trail Sled Dog Race in Anchorage, Alaska, U.S. March 5, 2022. REUTERS/Kerry Tasker 

Ryan Remington during the ceremonial start of the 50th Iditarod Trail Sled Dog Race in Anchorage, in Anchorage, Alaska, U.S. March 5, 2022. REUTERS/Kerry Tasker 

Jeff King during the ceremonial start of the 50th Iditarod Trail Sled Dog Race in Anchorage, Alaska, U.S. March 5, 2022. REUTERS/Kerry Tasker 

Jeff King during the ceremonial start of the 50th Iditarod Trail Sled Dog Race in Anchorage, Alaska, U.S. March 5, 2022. REUTERS/Kerry Tasker 

Hugh Neff during the ceremonial start of the 50th Iditarod Trail Sled Dog Race in Anchorage, Alaska, U.S. March 5, 2022. REUTERS/Kerry Tasker 

Jessie Holmes during the ceremonial start of the 50th Iditarod Trail Sled Dog Race in Anchorage, Alaska, U.S. March 5, 2022. REUTERS/Kerry Tasker 

Taxidermy mounts of legendary lead dogs are on display at the Iditarod Trail Sled Dog Race headquarters in Wasilla, Alaska, U.S., February 24, 2022. On the left is Andy, lead dog for four of Rick Swenson's five Iditarod victories. On the right is Togo, the lead dog for musher Leonhard Seppala, one of the main mushers in the 1925 Serum Run that brought diphtheria medicine to Nome. Togo and Seppala traveled 264 miles in the relay and Togo was considered the main dog hero of the mission. Togo and Andy stand against a wall filled with portraits of Iditarod race champions. REUTERS/Yereth Rosen 

Stuffed sled-dog toys and other merchandise sit on display at the Iditarod Trail Sled Dog Race headquarters in Wasilla, Alaska, U.S., February 24, 2022. Employee Megan Green, in the background, is at the register. Picture taken February 24, 2022. REUTERS/Yereth Rosen 

A musher is pulled by a team of dogs during a sled dog racing competition in the Omsk region, Russia February 5, 2022. Picture taken with a drone. REUTERS/Alexey Malgavko 

A Siberian Husky dog looks through a car glass during a sled dog racing competition in the Omsk region, Russia February 5, 2022. REUTERS/Alexey Malgavko TPX IMAGES OF THE DAY 

Siberian Husky dogs wait for their master inside a car during a sled dog racing competition in the Omsk region, Russia February 5, 2022. REUTERS/Alexey Malgavko 

Mushers are pulled by teams of Siberian Husky dogs during a sled dog racing competition in the Omsk region, Russia February 5, 2022. Picture taken with a drone. REUTERS/Alexey Malgavko 

A team of Siberian Husky dogs pulls a musher during a sled dog racing competition in the Omsk region, Russia February 5, 2022. REUTERS/Alexey Malgavko 

Mushers are pulled by teams of Siberian Husky dogs during a sled dog racing competition in the Omsk region, Russia February 5, 2022. Picture taken with a drone. REUTERS/Alexey Malgavko 

A musher is pulled by his dogs during a dog sled and skijoring race in the museum-preserve "Tomskaya Pisanitsa" in the Kemerovo region, Russia January 22, 2022. REUTERS/Taisiya Vorontsova