I guess the earths magnetic field can switch or flip flop if memory serves?
The mag north pole is shifting pretty rapidly. If something goes haywire with the magnetic lines that deflect the solar energy, more than northern lights are affected.
Speaking of solar energy, the sun cycles it's energy, and we are approaching a low. Maybe a big low.
Imagine a very low solar energy period, and the carbon dioxide has been removed because of the media BS - and so the plants suffer.