Arhh the World will be so much better when the human population is halved and quartered over and over.
There are many ways to get there, we are on a path to success and climate change should give each a bolster:
War
Pestilence
Plate tectonics - could solve the problem of California alone! Or when the Canary Island volcanic collapse causes a tsunami that will submerge New York

And then there are Celestial visitors - mineral, animal or vegetable.
That should cover asteroids, aliens, *******s and aubergines too!
