Ants watch their step to find their way

Ants, it turns out, use a pedometer-like system to measure distances and find their way home. The elegant experiments were conducted by Harald Wolf at the University of Ulm, Germany.

Wolf says that the findings show that ants have an internal system that somehow keeps track of now many the steps they have taken, though he is quick to point out that the insects probably cannot "count" as such.

Well, can you imagine counting the steps of six legs, let alone two?