The iPhone has a hidden "night vision" feature that turns your screen red. More than giving a spy movie vibe, a red screen could help sharpen people's night vision by reducing the harmful effect ...

For centuries, the saying "Red sky at night, sailor’s delight. Red sky in the morning, sailors take warning" has been used to predict the weather – but is there any truth to it? According to ...

We’ve all gotten used to seeing movies depict people using night vision gear where everything appears as a shade of green. In reality the infrared image is monochrome, but since the human eye is ...