Cosmic Rays - scientists have yet to work out where most high-energy cosmic rays come from. Either an increase striking our atmosphere, or a weakening of our shields, will let in more cosmic rays. They are already zipping through your body every second, and they could end up being our silent killers.

As one example of their danger, airlines do not let pregnant women work on their inter-continental routes, because of the increased exposure to cosmic rays at those heights.

Possibility this century = 8

Possibility in 2012 = 6

Could Ancients Predict It? = 3

TOTAL = 17

Crustal Displacement - a physical pole shift. The mechanism is not understood, and most theories are just wild guesses. However it seems quite likely we had one 12,000 years ago, and what goes around, comes around.

Charles Hapgood provided substantial evidence for a pole shift at that time, and Allan and Delair have added to it in their book Cataclysm!: Compelling Evidence of a Cosmic Catastrophe in 9500 B.C. Take into account that Albert Einstein endorsed Hapgood's ideas, and we have something to worry about.

Possibility this century = 6

Possibility in 2012 = 6

Could Ancients Predict It? = 6

TOTAL = 18

Flu Pandemic - it might not be swine flu, but flu researchers say a deadly pandemic is not a case of if, but when. Our generation is generally unaware of how bad the pandemic of 1918 was - it killed 50 million people. It was the number one cause of death amongst soldiers in WW1. Being killed by the enemy came second.

Possibility this century 10

Possibility in 2012 6

Could Ancients Predict It? 1

TOTAL 17