I hear people talking about the earths magnetic poles reversing but how exactly could/would that happen?
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The north and south pole switch. The insides of earth has massive convection currents made of metals with a iron-ish core which makes earth like a big magnet. The magnetic field for solid magnets dont really change because its not a moving liquid.
The earth poles switch about every 250,000 years and were “overdue” but its actually difficult to determine. Most of the time when it flips it takes a long time and has very little impact on life but we have evidence that a few times the fields weakened during this process to cause a substantial impact on the environment.
Either way we know it will effect some stuff like navigation systems and satellites which will cause a few issues but more than likely not to the degree the doomsdayers are saying.
If its the bad one..radiation levels increase causing cancer along with failure to power grids, communications like cell phones will fail and this will also throw of migratory patterns for many animals and insects which will cause ecological disasters including crops to not get pollinated and stuff like that but….like I said, that is statistically very unlikely.
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