Two Boy Scouts, shown here using compasses while working on their Human Game merit badges and mere seconds before receiving an uncomfortable congratulatory back rub |
"We expect an interchange in the positions of magnetic north and south to begin any day now," NASA Chief John J.J. Schmidt explained. "The effects aren't going to be sudden or catastrophic, but it's going to be a bumpy ride, folks."
The polarity of the Earth has changed randomly numerous times in the past, the last being less than a million years ago. And it can happen relatively quickly, even within a human lifetime according to Schmidt. "While many people will not notice any changes at first, it will become clear once the polarity fully reverses."
The most immediate difference will be noticed when using a compass for navigation. The reversal of magnetic North and South will require some adjustment, but shouldn't be much of a problem for most of us, reassures Schmidt. "The real problem will be the shift in Up and Down. People crossing the equator will continue to be torn in half."