Ants with Legs

I've always been one for odd little scientific snippets. Particularly stories about scientists who perform important research into importanat things which enrich our lives. Such as the following (edited) story from the BBC Website:

Ants 'use an internal pedometer'

Desert ants use an internal "pedometer" to measure exact marching distances, according to a study.

Researchers knew foraging insects could navigate using light from the sky, but were puzzled by the animals' ability to gauge the length of ground covered.
By manipulating the ants' leg lengths to give them longer and shorter strides, a Swiss/German team found the ants "counted" steps to judge distance.

To investigate, scientists from the University of Ulm, Germany, and the University of Zurich, Switzerland, set some ants off on a foraging trip along a straight tunnel, but once they had reached the food their legs were manipulated to either make them longer by adding stilts, or shorter by partially amputating them.
The ants were then returned to the same spot to begin their homeward-bound journey. However, the researchers discovered the ants with longer legs overshot the nest entrance, while those with the shortened legs undershot it.

Aren't you glad they've cleared that up for us. Aren't you? Now what's concerning me, in retrospect is the distance between Ulm and Zurich.

Anyways... I'm off to see if there's a market for ant sized prosthetic limbs...