The Earth's poles may be about to flip - and the consequences could be dire

Over the past 200 years, the Earth's magnetic field has been getting weaker, and scientists believe that this could be a sign that the poles are about to flip. If that happens, it could knock out power grids, alter the climate and expose us to solar winds that could puncture the ozone layer. The poles have switched regularly throughout Earth's history. The last time they flipped was 780,000 years ago. Since the poles normally switch every 200 - 300,000 years, we are well overdue for a...

from Inhabitat - Green Design, Innovation, Architecture, Green Building https://inhabitat.com/the-earths-poles-may-be-about-to-flip-and-the-consequences-could-be-dire
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