This looks like a good read. UK publication BBC Focus (February 2017). Should we worry about asteroids they ask? Well, yes. When newspapers are trying to introduce words like “Fireball season” (What?) you know something is up. The “Life after man” article looks interesting. We could very well descend very quickly into anarchy if the financial system goes belly up. Or if we are hit by a sudden EMP wave that knocks out all electricity. Add the usual list of problems (and the unusual) and… Yeah, we may be in over our heads.
Which is why you are a fool if you are not gearing up.