Antarctica is the coldest, most alien place on Earth. The only animals that can survive there are penguins, seals, seabirds and whales, and the only humans to be found are visiting research scientists. Through letters to her godson, Daniel, and her own photographs, Sara Wheeler tells the story of her experiences at the bottom of the world. Travel writer Sara Wheeler spent seven months in Antarctica. She is the author of the best selling Terra Incognita, a book about her experiences on the ice.