- Earth’s magnetic field has weakened by 15 per cent over the last 200 years
- This 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
- Daniel Baker, from the University of Colorado, Boulder, says that parts of the planet will become uninhabitable during a reversal
The Earth has a fierce molten core that generates a magnetic field capable of defending our planet against devastating solar winds.
The protective field extends thousands of miles into space and its magnetism affects everything from global communication to power grids.
But this magnetic field, so important to life on Earth, has weakened by 15 per cent over the last 200 years.
And this, scientists claim, could be a sign that the Earth’s poles are about to flip.