All the ways the world can end....

[SeeminglySquare]

Add to list

1. Supervirus
2. Meteor
3. Wrath of God
4. Polar Flip
5.

[wa5]

War, Nuclear.
War, Biological.. (same as super virus?)
Global warming (waterworld) if you choose to believe in such things.
Solar flares/ degradation of the Van Allen Belt.
Chuck Norris having a bad day and snap kicking the world.
A conflict between Chuck Norris and Mr T.

[donc48]

Alien Invasion (Ok it's a long shot)
Massive release of methane from the sea floor.(My Personal favorite)
Super Volcano (Ok it will just off much of us but in a couple of thousand years you'll have good farm land)
Massive Sun Spots (Big ice age)
Gamma Radiation (Another Long Shot)
Nano robots running amok
Genetically Modified Flu and or Small Pox (Super bug?) (Ok no planet killer but it will give somebody or something else a chance to crawl out of the slime and in a million years or two have a shot at the brass ring)

[SeeminglySquare]

Moon falling, from Time Machine movie

[wa5]

Overpoplulation

[ozzana]

skynet & friends

[wa5]

Mass sterility.
Mass drug (airborn or water born) induced madness

[SeeminglySquare]

Mass stupidity, via Stephen King's story in the Wastelands

[Shanna_Redwind]

Global Warming melting the permafrost creating an unstoppable greenhouse force
A plant pathogen destroys all plant life
Monsanto's stop gene that prevents seeds from being viable manages to jump to other plant varieties