The magnetic field is vital to life on earth. 1
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Palmer, D. (2011). Earth in 100 Groundbreaking Discoveries. Buffalo, N.Y.: Firefly Books.
- Palmer, 2011, p. 34: “Swirling motions in the electrically conductive liquid metal of the outer core are thought to be responsible for generating Earth’s powerful magnetic field, which emerges close to the poles, and extends for thousands of kilometres out into space, creating a protective cocoon around the planet that is vital to the survival of life.” ↩