A lot of public health messages focus on the dangers of overexposure to the sun's rays. But while it's true that we have to ...

Think of your skin as a diary that keeps track of the days that you skipped sunscreen. Whenever you stepped out without sun ...

You may remember that amount of 22 degrees from a previous Hey Ray about halos ... Those tiny ice crystals refract the Sun's light to make the rainbow-effect happen. Typically, the colors go ...

Cosmic rays coming from outside the Solar System bring these particles closer to the Sun, where they experience changes ...

Whether you are going camping, to the lake or simply heading out for little league games, it is more important than ever to remember sun safety. The American Cancer Society finds that skin cancer ...