HOLLYWOOD now has one less disaster scenario to worry about. 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.
The strength of the Earth’s magnetic field is known to drop during “magnetic reversals”, when the north and south poles…
