Even these notoriously hard-working insects need a break every now and then.
Ant colonies are complex systems built on the cooperation of individual members. When under the attack from a predator, ants work as a well coordinated "superorganism" to esnure the safety of the colony.
Are all ants created equal? They sure look the same, and for the most part, even act the same. So how do they tell one another apart? Researchers now believe they have identified the exact mechanism that allows ants to tell friend from foe.
Who are the best diggers around? Is it humans? Fantasy dwarves? Mole people? Nah... as far as the experts are concerned, the fire ant takes the cake. New research has revealed that one of the primary reasons these little guys are such successful invaders is that they are able to thoroughly excavate complex colonies regardless of where they decide to settle - whether it be in wet clay or coarse and difficult-to-shape sand.