Ants Use Internal Pedometer to Measure Distance

For my first college presentation, I learned about
desert ants using the sun's polarized light to keep their bearings.

When they leave their nest, they wander all over the place
to look for food, then they amazingly head back home
in the most direct straight line.












The sky can help them keep track of direction
but not of distance. According to a new study,
involving eeeeksperiments where their legs
were lenghened or amputated, these ants keep
track of distance by counting the number of steps
they took. impressive.

Here's the full BBC story.