Threat+types

build up this list, and restructure it accordingly, add the [ [ ] ] wiki link to the name and start filling in the sub pages This tree is not ideal, really a lot of these things are a network of causes. I'm looking into a way to draw this graph easily. =Earth originating=
 * pandemic
 * Directly caused by humans
 * science
 * Genetic engineering
 * Geo-engineering
 * Terrorism
 * war
 * chemical
 * biological
 * nuclear
 * films
 * On the beach
 * Mad Max 3
 * Social
 * mass suicide
 * Religion
 * ethnic cleansing
 * natural
 * super volcano
 * flood
 * Earthquake
 * other
 * zombies
 * medical
 * films
 * 28 days later
 * super natural (Haiti)
 * Religious (biblical - revelations)
 * new human species
 * evolves unaided
 * is created/boot-strappped intentionally

=Non-Earth originating=
 * solar flare
 * films
 * 2012
 * asteroid
 * aftereffects
 * films
 * tank girl
 * aliens
 * new planetary formations