So changes there are indicators of how greenhouse-gas accumulation will alter other parts of the planet. The Sachs Harbour video took 18 months to produce. The information in it comes from observations and the verbal history of the fishing and hunting families that have lived on Banks Island for generations. This is on very edge of permanent human habitation, so the people there need to notice even the smallest changes in their environment if they are to continue to eke an existence off the land and out of the sea. It is a tiny collection of homes perched on the shores.
Roads are gravel.
People travel around either by snowmobile or all-terrain vehicle, depending on how much snow is on the ground. It is a 2 -hour flight from Inuvik, a community of 3,000 people. A fresh-water lake near the hamlet was destroyed when the permafrost surrounding it collapsed and its water drained into the ocean. So much permafrost is gone that residents are having trouble travelling over the mushy ground. The ice has begun to thin dangerously from higher temperatures.