{"product_id":"2940170580835","title":"North Pole, South Pole: The Epic Quest to Solve the Great Mystery of Earth's Magnetism","description":"\u003cp\u003eWhy do compass needles point northamp;mdash;but not quite north? What guides the migration of birds, whales, and fish across the world's oceans? How is Earth able to sustain life under an onslaught of solar wind and cosmic radiation? For centuries, the world's great scientists have grappled with these questions, all rooted in the same phenomenon: Earth's magnetism.\u003c\/p\u003e\u003cp\u003eOver two thousand years after the invention of the compass, Einstein called the source of Earth's magnetic field one of greatest unsolved mysteries of physics. Here, for the first time, is the complete history of the quest to understand the planet's attractive pullamp;mdash;from the ancient Greeks' fascination with lodestone to the geological discovery that the North Pole has not always been in the Northamp;mdash;and to the astonishing modern conclusions that finally revealed the true source.\u003c\/p\u003e\u003cp\u003eSkillfully told, \u003ci\u003eNorth Pole, South Pole\u003c\/i\u003e unfolds the human story behind the science: that of the inquisitive, persevering, and often dissenting thinkers who unlocked the secrets at our planet's core.\u003c\/p\u003e","brand":"Tantor Audio","offers":[{"title":"Default Title","offer_id":47150711832816,"sku":"2940170580835","price":19.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0737\/7593\/9824\/files\/2940170580835_p0.jpg?v=1763713380","url":"https:\/\/shop-qa.barnesandnoble.com\/products\/2940170580835","provider":"Barnes \u0026 Noble (DEV)","version":"1.0","type":"link"}