I’m a little concerned about changes in the Earth’s magnetic field (weakening, could be the advance sign of a polarity reversal). Does the Sun’s magnetism have a ‘harmonic’ effect upon the Earth?
That is indeed what the experts think is happening (both)
The Earth's magnetic field helps shield us from potentially dangerous solar wind particles [basically same as galactic cosmic rays, only much less energetic/slower moving.
The danger of focusing all human effort and funding on man made global warming and forcing out any alternative thinking is that we might really miss something that is predictable and deadly. Maybe, if we know far enough in advance, some of the wasted resources that are going into cow farts and car exhaust could be used to figure out how to protect mankind until things stabilize, or food storage for extremely cold weather. How about an inevitable meteor or commit hit? We could use some of the wasted man made global warming resources on actually making a system that could detect and divert “earth killer” objects.