Needed badly for the world to again have natural order: Once a century, the scientists say -- another Carrington sunburst (1859) or larger that could throw us back into the an instant worldwide dark age with no power because the computer and other technology running it would be erased: Totally kaput.
Not only would the lights go out but nuclear power plants would stop being cooled, melt down, and make the Japanese nuclear plant disaster look very small and minor, dangerously irradiating hundreds and thousands of miles of agriculture land around each plant; hydroelectric dams would become nothing but giant and useless manmade piles of stuff blocking rivers which, in quick terms of a few dozen months, will fail and inundate downstream cities and towns and growing fields while drowning everything in their path; destroy financial records of people and financial empires, meaning nobody has any cash anywhere unless you have a basement of gold, silver and diamonds to trade for goods needed to survive; make hospitals and drug manufacturing plants and refineries ghost buildings with no power; mean that food warehouses, once empty, will remain empty because the technology needed to replenish them will be wrecked; resulting in violent anarchy that turns neighbor against neighbor as hunger sets in and people fight each other to survive, even buy needed clothing and tools; sink and drown nuclear and other military submarines and warships and make other military hardware, even automatic rifles and cannons that need factory-made ammunition and replacement parts will be as useless as the simple clubs they become. All because of another big Carrington or Carrington-plus type sunburst: the end of life as we know it unless we belong to remote tribes that still exist without modern technological conveniences. Even underdeveloped or overpopulated poor countries where people rely on smart phones to conduct business will collapse into anarchy when everything stops. Super cities across the world -- North America, China, Europe, Middle East will quickly decay into windswept towering ruins within a year or so, their populations reduced to warring small tribes battling each other over food and trinkets.
And the disasters mentioned are just the tip of the wreckage to come before the planet, its human population shrunk to a few dozen, perhaps at best hundreds of millions, restores itself because there are too few people to prevent the rebirth from happening.
And, as warned, a really big sunburst is guaranteed to happen -- tomorrow, next year, a decade from now.
The lesson: store a healthy one-year stock of cash, water, food, medicines at home, like Mormons are instructed to do, and love your friends, neighbors and relatives because it may be you only chance to survive.