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What is the Arctic Death Spiral?

Season 44 Episode 1 | 2m 42s

The Arctic 鈥渄eath spiral鈥 refers to the rapid loss of sea ice caused by climate change. For walruses, this means losing the ice platforms they rely on to rest, raise their young, and hunt. Discover how melting sea ice is reshaping their future.

Major support for NATURE is provided by The Arnhold Family in memory of Henry and Clarisse Arnhold, Sue and Edgar Wachenheim III, The Fairweather Foundation, Charles Rosenblum, Kathy Chiao and Ken Hao, Sarah and Sandra Lyu in memory of Seung and Dorothy Lyu, The Lillian Goldman Charitable Trust, Dr. George Stanley and Sandra Caruso, Kate W. Cassidy Foundation, Filomen M. D鈥橝gostino Foundation, Gregg Peters Monsees Foundation, Koo and Patricia Yuen, Seton J. Melvin, Sandra Atlas Bass, George D. Smith Fund, Inc., Dr. Coralyn W. Whitney Program Fund for Science and Nature, Bradley L. Goldberg Family Foundation, The Hite Foundation, Perpetual Kindness Foundation and Sun Hill Renewal Fund, and by Viewers Like You.
Extras
Who rules the streets -- and skies -- of the city?
隆Descubre la ciencia detr谩s de los rel谩mpagos con la educadora Dulce Enr铆quez!
隆Ruge y ad茅ntrate en el mundo salvaje de los leones africanos con el experto Joaqu铆n Hidalgo!
隆Sum茅rgete en los misterios del oc茅ano con la experta marina Estefan铆a Pihen Gonz谩lez!
A mother mountain lion risks her life to feed her six kittens.
Mountain lions risk everything to hunt elk, prey more than twice their size.
An orphaned baby walrus, just a week old, gets a second chance.
It was once believed that walruses dug for clams with their tusks, but the truth is even stranger.
Uncover the secret world of New York and London鈥檚 resilient pigeon flocks.