Why Do Humans Have Earlobes? An Evolutionary Biologist Explains

Article excerpt

The human earlobe, that soft flap of tissue hanging below the ear, has mystified scientists for generations. Evolutionary biologists still debate its purpose, with theories ranging from thermoregulation to sexual selection, yet no consensus exists on why we evolved this seemingly vestigial feature. Some researchers suggest earlobes help dissipate heat or signal reproductive fitness; others argue they're simply byproducts of how ears develop. The mystery persists partly because earlobes leave no fossil record and vary widely across human populations, making their evolutionary origins difficult to trace.