Drugs and the adolescent brain by Anne L. Wheeler and Paul W. Frankland.- Gonadal hormones organize the adolescent brain and behavior by Cheryl L. Sisk.- The role of pubertal hormones in the development of gender identity: fMRI studies by S.M. Burke and J. Bakker.- Pubertal timing, exploratory behavior and mental health: a view from a clinician and public health practitioner by Pierre-André Michaud.- Puberty, the brain and mental health in adolescence by Russell Viner.- The Role of Puberty in Human Adolescent Brain Development by Anne Lise Goddings.- The Adolescent Brain: Insights from Neuroimaging by Jay N. Giedd and Alexander H. Denker.- Gene networks, epigenetics and the control of female puberty by Alejandro Lomniczi, Juan Manuel Castellano, Hollis Wright, Basak Selcuk, Kemal Sonmez and  Sergio R. Ojeda -- Neuroendocrine and Molecular Mechanisms for the Metabolic Control of Puberty: Recent Developments by Manuel Tena-Sempere -- Prostaglandin E2, gliotransmission and onset of puberty by Vincent Prevot and Jerome Clasadonte -- The gonadotropic axis deficiency: a neurodevelopmental disorder by Lukas Huijbregts, Brooke Tata, Nicolas de Roux.- Changes in pubertal timing: past views, recast issues by Jean-Pierre Bourguignon, Françoise Domine, Fabienne Glowacz, Marie-Christine Lebrethon, Anne-Simone Parent -- Subject Index.