Gillian Turner
Why do compass needles point northâ€”but not quite north? What guides the migration of birds, whales, and fish across the worldâ€™s oceans? How is Earth able to sustain life under an onslaught of solar wind and cosmic radiation? For centuries, the worldâ€™s great scientists have grappled with these questions, all rooted in the same phenomenonâ€”Earthâ€™s magnetism.,Over 2,000 years after the invention of the compass, Einstein called the source of Earthâ€™s magnetic field one of greatest unsolved mysteries of physics. Here, for the first time, is the complete history of the quest to understand Earthâ€™s magnetismâ€”from the ancient Greeksâ€™ fascination with lodestone, to the geological discovery that the North Pole has not always been in the Northâ€”and to the astonishing modern conclusions that finally revealed the true source.,Richly illustrated and skillfully told, ,North Pole, South Pole, unfolds the human story behind the science: that of the inquisitive, persevering, and often dissenting thinkers who unlocked the secrets at our planetâ€™s core.
Science,Nonfiction,Science,Geology,History
North Pole, South Pole: The Epic Quest to Solve the Great Mystery of Earthâ€™s Magnetism