What's the most realistic doomsday scenario??

[Danie84]

A plague on epic proportion like 10 times The Black Death.

A asteroid.

I always ponder, with so many people on this planet, a food shortage is not unlikely to cause massive famine across the Earth.

We got 17 more days...to see if the Mayan's Doomsday phrophecy is real.

 

[Brown_Pride]

Chlorine resistance has evolved in micro organisms including bacteria.

well fuk me that's pretty fukin scary.