The Great Earth Magnet

Without Earth's magnetic field, it would be impossible for us to live. So what creates Earth's magnetism - this amazing force of nature to which we owe our lives? Read More

Without Earth's magnetic field, it would be impossible for us to live. So what creates Earth's magnetism - this amazing force of nature to which we owe our lives? Read Less

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2011, Pacific Learning ISBN-13: 9781604578850 Trade paperback See All