Anybody ever heard of verneshot? It's a bizarre and interesting theory on what wiped out the dinosaurs and what could wind up destroying us all. According to this theory, pressure building up under the earth could fire a continent up into space, then it would slam back down and create chaos on earth, most likely wiping out anything larger than an insect.
"If you think you’ve seen it all, just picture this: your entire country, launched into space." http://www.exitmundi.nl/verneshot.htm
Scary, but the idea is kind of cool.
The whole website (http://www.exitmundi.nl/exitmundi.htm
) is about scary but interesting end-of-the-world scenarios.
So many ways to go.
"Dying of starvation in the gutter. That is all the future holds for me. Or alcoholic poisoning in the toilet of my choice, that's all there is as far as I can see. Fried to death in seconds by the Russians, or if you're lucky, just a sudden stroke. A lingering death from fallout while your teeth and hair fall out. A certain death from cancer if you smoke".
-- from the song Ye Sleeping Knights of Jesus, by Robyn Hitchcock