Thanks to the simplicity of their design and function, light switches seem to last pretty much forever despite daily use. Indeed, most of us rarely give a second thought to these humble ...

But have you also noticed a change in your mood? We've known for a while that light plays a role in our wellbeing. Many of us tend to feel more positive when spring returns. But for others, big ...

This is the next article in our ‘Light and health’ series, where we look at how light affects our physical and mental health in sometimes surprising ways. Read other articles in the series.