The Earth?s magnetic field is showing signs of getting readyto shift, so that magnetic north will point towardsAntarctica and magnetic south will point north. Compasseswill point the wrong way, and migrating birds, fish andturtles will be affected. This won?t be the first time: ithappens about every 500,000 years.
Einstein said that the origin of the Earth’s magnetic fieldswas one of the greatest mysteries in physics. The Earth?smagnetic poles are constantly drifting around. Right now,magnetic north is moving out of Canada into the Arctic Oceanat about 10 miles per year.