Light helps explains the evolution of our skin colour, why some of us have curly hair, and the size of our eyes. And light ...

For most of our evolutionary history, human activity has been linked to daylight. Technology has liberated us from these ancient sleep-wake cycles, but there is evidence sunlight has left and continu ...

Surprisingly, it's possible to charge solar lights indoors. I spoke to electrical experts about how to charge solar lights ...

Welcome to our 'Light and health' series. Over six articles, we look at how light affects our physical and mental health in sometimes surprising ...