polarity magnetic field

The Earth Island magnetic field is extremely faster than people think
The earth has no life if we don't have one
The Earth's magnetic field may be about to reverse and we still don't know what to do
Earth's magnetic field is an invisible force field that envelops the planet, protecting us from harmful radiation from the Sun by reflecting particles that carry electricity back
100 years from now, Earth's magnetic field will reverse
The Earth's magnetic field can be reversed, which means that all human compasses must point south instead of the north.