There is actually a scientist who gave a talk at a conference (I'll find a link later if I can) whose solution was to infect the greater population with a serious disease, sort of like the bird flu, but make sure that a holy chosen few were given an antedote. His long speech was met with vast amounts of cheers, apparently from people who believed that they were in the antedote crowd.

It's sort of scary to think that way, but if the projection is to be believed, lots of people are going to die either way. I think I might prefer natural selection though.