Actually on watching a computer scenario of platetectonics of the West Coast they showed a scenario where virtually the whole coastline of California falls into the ocean--and nothing "sci-fyee" about it, just hard, computer demonstratable science.
But also, there have been random disaster events at least twice since 250million years ago that has wiped out 95% of all species of life on the planet.
These are random chance events, so NO time at all can be placed on them, it could be a year before we see that giant asteroid heading right at us or it will never ever happen---these events are not inevitable, they are category ,random chance.
Like we are so all meant to be:)
Again, i write these things, as a person that is ultra spiritual to the Max.Curious, no?