The Arctic is home to the toughest creatures on Earth, but its real force works quietly underfoot. Every winter sea ice starts small and delicate… It grows over millions of square miles. Like a lung, the Big Freeze breathes life into the Arctic every year in a cycle that impacts the climate across the globe. This is the story from the edge of the Arctic where it all starts: Canada’s Hudson Bay.

Story Producer and Writer: Raúl Santos.