The Inuit did not fear the cold; they took advantage of it. During the 1950s the Canadian government forced the Inuit into settlements. A family from Arctic Bay told me this fantastic story of their grandfather who refused to go. The family, fearful for his life, took away all of his tools and all of his implements, thinking that would force him into the settlement.
But instead, he just slipped out of an igloo on a cold Arctic night, pulled down his caribou and sealskin trousers, and curled off a length into his hand. As the faeces began to freeze, he shaped it into the form of an implement. And when the blade started to take shape, he put a spray of saliva along the leading edge to sharpen it.
Thats when what they call the shit knife took form. He used it to butcher a dog. Skinned the dog with it. Improvised a sled with the dogs rib cage, and then, using the skin, he harnessed up an adjacent living dog. He put the shit knife in his belt and disappeared into the night.
That just happened your mind got blown by the ingenuity and downright disgustingness of indigenous tribes people.