How rites of passage around the world have used tattoos, scars, piercings and other marks to signal a change in who a person is within their community.
A narrative tour of tattoos and metal jewelry through time, from ancient preserved skin to sailors, machines and modern studios, and what each era added.
Why visible tattoos and piercings became more common as personal expression: changing attitudes, better safety, media, money and a stronger focus on individuality.
How outward changes like tattoos and piercings relate to our inner sense of self over time, why the link runs both ways, and why the evidence is mixed.
How particular scenes such as punks, bikers, sailors, metal fans and modern primitives developed their own looks and norms around tattoos, piercings and jewelry.