They never quit. No prior negative effects have ever shown up in the geological record and all fears are completely ungrounded. Even our real exposure to EMP pulses from the sun which is a real plausible risk is constrained to the present time and it is actually waning also.
Grid power may only have a couple of decades left and all electronics are actually easily protected. With the disappearance of the grid, we will have a massively distributed power system that is readily rebooted and replaced as well. Thus serious risk has been an exposure starting around seventy five years ago and them locally for a long time to another twenty five years.
It is still bad if it were to happen tomorrow but then it is also repairable.
NASA: Earth’s magnetic poles are ‘switching’ with catastrophic consequences for humanity
[ and of course failed to wipe out anything else. What nonsense. The Neanderthal was merely absorbed into expanding human populations as all small populations are. - arclein ]
GETTY - Earth's magnetic field is already weakening
Michael Myer, lead scientist for the NASA Mars mission, added that the Sun had been much more powerful in the early stages of the solar system when Mars had been continually blasted, and, even then the process had taken billions of years and still one per cent of its atmosphere remains.
[ Nothing happened! That is also an observation. - arclein ]
NASA•GETTY - Solar flares cause the beautiful Northern Lights but we are currently protected by the magnosphere
The Her(m)etic Hermit - http://hermetic.blog.com