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This is Scientific American Science Quickly.

I'm Christopher and Taliatta.

It's easy to get lost in the salt pans of Tunisia.

There are these featureless plains in the desert, where the ground is sometimes the blinding

white color of salt.

So it's a very strange feeling, and some people really feel uncomfortable there,

because you basically don't see anything.

Marcus Kahnaden is at the Max Planck Institute for Chemical Ecology in Jena, Germany.

And he does fieldwork in the salt pans with his colleague Marilia Freira.

So actually, the car that we drove was often the landmark,

so we could know how to return back to it because it's very easy to get lost.

While it's easy to get lost for them, that's not really the case for their study subjects.

A type of desert ant that can walk for more than half a mile over these flat plains and still find its way home.

And to be fair, the ants have a few tricks to be able to do that.

What we know from them is they use a sun compass to get an idea in which direction they walk,

and they count their steps to get an idea of the distances they cover in the individual directions.

...