Foreword / by Richard Weller, MD

Introduction: how I got sun curious

The ape that fell in love with the sun. Sol mates: two million years under African skies ; Care of the body: the golden age of heliotherapy ; Slip, slop, slap: the war on skin cancer and the rise of sunscreen ; The mysteries of melanoma: what do we really know about the most dangerous skin cancer?

Enlightenment. Changes in latitude: why are people less healthy farther from the Equator? ; The Swedish paradox: the mysterious longevity of sun-seeking Swedes ; Relax: a new explanation for the sun's cardioprotective powers ; All cause: the case for sunlight comes together ; Friendly fire: modernity, chronic inflammation, and the sun deficit ; In the red zone: the pervasive and perplexing powers of infrared light

All the light we can't unsee. Tick tock: the scourge of artificial light at night ; Darkness on the edge of town: two weeks of night without light ; The light fantastic: what I learned in sleep lab ; Taking the cure: bright days, dark nights, and sleep at last ; Right with light: putting heliotherapy into practice.