Researchers debate claims of monogamy for Lucy and her ancient kin
A weird kind of creature strode across the eastern African landscape from around 4 million to 3 million years ago. Known today by the scientific label Australopithecus afarensis, these ancient ancestors of people may have taken the battle of the sexes in a strange direction, for primates at any rate. True, no one can re-create with certainty the court and spark that led to sexual unions between early hominids. Nothing short of a time machine full of scientifically trained paparazzi could manage that trick.