We Still Don’t Know When The Earth’s Magnetic Field Began
The Earth ’s magnetic field is thought to have been crucial to the natural selection of life . If so , knowing its origin is essential not only for read our own planet , but establishing the prospects for life elsewhere . Unfortunately , geologists try out to launch when the field appear may be back to foursquare one , with the discovery of a fault in what was recall to be grounds for the field ’s early formation ....