The Earth, it seems, will be safe when its magnetic field falters during the next reversal of its magnetic poles.
A new model of the way the Earth interacts with the solar wind indicates that a replacement field will form in the upper atmosphere during the switch.
Scientists had previously thought that the planet would be left without a protective shield to stop lethal radiation from space reaching the surface.
New Scientist: Solar wind to shield Earth during pole flip. Not uncharacteristically, I've been really worried about this. I hope they're right.
