Finding Home Without a Map or Compass

Source: Gaye Levy and Jim Cobb for

The logical thing, of course, would be to have maps and a compass on board at all times. The first reality is that a disaster, whether wrought by Mother Nature or man, can happen when we least suspect it.  The second reality is that unless you are the exception to the rule, you probably do not have a compass and map with you at all times.

That begs the question: how do you go about finding your way back home without a map and compass?