Development of the human body used to approximately judge a child's age based on physical development. Puberty is the process of physical changes through which a child's body matures into an adult body capable of sexual reproduction. It is initiated by hormonal signals from the brain to the gonads: the ovaries in a girl, the testes in a boy. In response to the signals, the gonads produce hormones that stimulate libido and the growth, function, and transformation of the brain, bones, muscle, blood, skin, hair, breasts, and sex organs. Physical growth—height and weight—accelerates in the first half of puberty and is completed when an adult
European Society for the study of Human Evolution European Society for the study of Human Evolution The European Society for the study of Human Evolution (ESHE) is a non-profit organization whose intention is to promote the fields of research that are involved in the investigation into the biological and cultural evolution of humans. This broad field of research comprises, among other disciplines, human paleontology or paleoanthropology, paleogenetics, paleolithic archaeology, and paleogeography. The society was officially established in 2011 in Leipzig, Germany, as a non-profit organization under German law. The current president of the society is professor Dr. Jean-Jacques Hublin, Director of the Department of Human Evolution at the