Medicine & TechnologyResearchers reveal the Earth’s magnetic poles will flip in 300 years. Read and find out more about this looming occurrence that last occurred 780,000 years ago.
NASA is tracking a dent in Earth's magnetic field, an unusually weak spot in the field called the South Atlantic Anomaly, which allows harmful particles from the sun from going deeper into the Earth's surface than normal, which could be bad news for the low orbit satellites that pass through it.