The winter and its lack of sunshine can trigger what’s known as Seasonal Affective Disorder, or SAD. This seasonal slump is more than just a fleeting funk for some people. Roughly ten million ...

That’s why I set out to find a sunlight lamp. I had a few things on my checklist. Firstly, it had to have different settings. I wanted to be able to choose the brightness and warmth of the light.

But how do they actually work? I spoke to solar and electrical experts about how good solar lights turn sunlight into evening ...