There are a large number of events taht have happened many times in Earth's history and, given the cosmic timelines, will happen again, repeatedly. Some may be preventable with technology (eg asteroid impacts), others less so. A partial list is: tsunamis, earthquakes, volcanoes, supervolcanoes, flood basalts, asteroid impacts, magnetic field reversals, climate change (eg ice once covered the equator, North America us…
The Carrington event where a solar flare turned telegraph wires into those electromagnetd you build in elementary school. The current from the storm electrified all the telegraph cables. This would be bad for anything we've built that has a long cable run... https://podcasts.google.com/feed/aHR0cHM6Ly9mZWVkcy5tZWdhcGh... Or how 536 was the worst year on record (and no one really knows why) https://podcasts.google.com…
Although I didn't listen to the 11 minute podcast, I was curious to know basically what it was about. This is what Wikipedia says about year 536:
"In 2018, medieval scholar Michael McCormick nominated 536 as 'the worst year to be alive' because of the extreme weather events probably caused by a volcanic eruption early in the year, causing average temperatures in Europe and China to decline and resulting in crop failures and famine for well over a year. Other researchers have noted additional adverse events during the year, including a mysterious fog, possibly due to the volcanic eruption."[1]