Young people matter. They matter because an unprecedented 1.8 billion youth are alive today, and because they are the shapers and leaders of our global future. They matter because they have inherent human rights that must be fulfilled. Yet, in a world of adult concerns, young people are often overlooked. This tendency cries out for urgent correction, because it imperils youth as well as economies and societies at large. The largest global youth population in human history will have a profound effect on every aspect of our common future.