I recently read a story about a scientific researcher who bought a small sustainable farm out in rural Northern California in case of a overwhelming environmental disaster.

He wanted his family to be safe - just in case.

If I've learned anything from the riots taking place this past week in London, one of the Top 10 cities in the world, it's that after a global catastrophe, he'd have people storming his land, looting his storehouse and setting fire to his livestock within an hour.

To prepare for a global disaster, don't buy a farm. Buy a lockable bunker.