If you work at an investment bank and ever start thinking that things can’t get any worse, just remember that we’re overdue by a few million years an impact from the sort of asteroid that wiped out the dinosaurs.

With a bit of luck, by the time one of these comes around again we'll be able to spot it in plenty of time and technology will be sufficiently advanced for us to do something about it. But until then, there is always the risk that a smaller asteroid will get through undetected and really ruin the day.