When it comes to smartphone cameras, bigger is better. Larger image sensors and lenses have more light to work with, so they ...

On the first night, I used the red light filter while reading on my Kindle app, and I did notice that my eyes felt more relaxed than usual, especially compared to a bright white screen.

The researchers found that using a combination of red and ambient white light in the afternoon improved circadian rhythm and increased alertness in the period after lunch, when many people have a ...