Stilts are sticks you strap to your legs to make you taller.  Well, scientists decided to strap very tiny stilts on ants to see how far they'd walk. Why? Ants in the desert always find their way home, even though all the sand looks the same. How far they walk? It turns out they use math: they count their steps. When the ants tried to walk home on stilts, the stilts made their steps bigger. The ants didn't fix this by taking fewer steps -- they walked way past their anthill!