Jan 28, 2014
EXCLUSIVE: Scientists estimate that the magnetic field has weakened by 15 per cent over the last 200 years, exposing humans to higher levels of radiation.
Could be a sign that the planet's north and south poles are about to flip.
If this happens, solar winds could punch holes into the Earth's ozone layer.
This could damage power grids, affect weather and increase cancer rates.
Evidence of flip happening in the past has been uncovered in pottery.
As the magnetic shield weakens, the spectacle of an aurora would be visible every night all over the Earth.