Tag Archives: ant mill death spiral

These glasses were made by the Dolgans to protect the eyes from the Arctic sun, made of metal, beads, and buckskin, from the nineteenth century.

An ant mill is an observed phenomenon in which a group of army ants are separated from the main foraging party, lose the pheromone track and begin to follow one another, forming a continuously rotating circle, commonly known as a “death spiral” because the ants might eventually die of exhaustion