A new study reveals a beautiful spectrum of hidden skin "tones." — -- You’ll rarely see a healthy person with blue or green skin, unless you’re looking at them under invisible light. Scientists ...

Researchers have solved a major problem for optical wireless communications - the process by which light carries information between cell phones and other devices. Light-emitting diodes (LEDs) pulse ...

A galaxy seems like a hard thing to miss – let alone 39 of them – but that's exactly what a team of astronomers has just discovered. So where have these countless stars been hiding? About 11.5 billion ...