Gillian Turner is the author of North Pole, South Pole. She is a senior lecturer in physics and geophysics at Victoria University in Wellington, New Zealand. The winner of numerous awards for excellence in teaching and science communication, Turner has published over fifty articles in scientific journals.
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This 'fantastic story' of one of physics' great riddles takes us through centuries of scientific history (Simon Lamb, author of Devil in the Mountain). Why do compass needles point north-but not quite north? What guides the migration of birds, whales, a... SEE MORE