Book excerpt: In prehistoric societies children comprised 40–65% of the population, yet by default, our ancestral landscapes are peopled by adults who hunt, gather, fish, knap tools, and make art. But these adults were also parents, grandparents, aunts, and uncles who had to make space physically, emotionally, intellectually, and cognitively for the infants, children, and adolescents around them. Growing Up in the Ice Age is a timely and evidence-based look at the lived lives of Paleolithic children and the communities of which they were a part. By rendering these ‘invisible’ children visible, readers will gain a new understanding of the Paleolithic period as a whole, and in doing so will learn how children have contributed to the biological and cultural entities we are today.