The first episode in the second series of the BBC’s Earth’s Natural Wonders didn’t have the freshest of voice-overs (“dizzying array”, “race against time”, “needle in a haystack”), but it did have striking footage of people living at the extremes, from an Inuit granny in the Canadian Arctic, foraging for mussels beneath sea ice, to an Australian cowboy in Queensland, mustering cattle in the blistering bush with a low-flying helicopter. The second episode, focusing on relationships between people and animals, and including the Nenets of northern Siberia and their reindeer herds, will be screened at 9pm on Wednesday on BBC 1.