Actually the core is just an element of the magnetic field. The change in the field is partly due to the reduction in the Sun's output.
It may just eventually flip.
The Sun is undergoing a pole reversal right now. It may cause the Earth's magnetic field to flip, as you say. Maybe not all the way, but it may slip halfway, then flip back. Who knows?
All evidence suggests we are entering a new 'minimum' and that it will get colder on average globally.
All evidence suggests we are entering a new ‘minimum’ and that it will get colder on average globally.
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I’ve read that we’re entering a mini ice age. I suppose they’ll be calling it “Global cooling”.