Economic collapse
Inflation, bankrupt, massive unemployment, mayhem grow… every man for himself is the new and only rule.
Power outage
A giant EMP bomb destroys everything electric on earth… no more light, fridge, communication, radio, TV, hospitals… how long will we survive to this? (See « solar flare » for a natural alternative)
Industrial accident (chemical, nuclear)
We’ve been lucky so far with tchernobyl, fukushima, or Beirut… Will the luck continue forever?