Scientists say that magnetic north, which for two centuries has been in the icy wilderness of Canada, is currently relocating towards Russia at a rate of about 40 miles a year. The speed of its movement has increased by a third in the past decade, prompting speculation that the field could be about to 'flip', causing compasses to invert and point south rather than north, something that happens between three and seven times every million years."
No comments:
Post a Comment