Auroras occur when solar wind collides with Earth’s magnetic field, creating dazzling lights. Learn why auroras appear in red ...

You're introduced to someone and your attention catches on their eyes. They might be a rich, earthy brown, a pale blue, or the rare green that shifts with every flicker of light. Eyes have a way of ...

Blue light has acquired a dubious reputation in recent years, frequently blamed for everything from disrupted sleep patterns to digital eye strain. This high-energy light, emitted abundantly by our ...

If you've ever wondered how traffic lights work and how they can detect your car, you've probably also been curious about those small blue lights mounted above the signals themselves. These blue ...

You may have noticed a blue tint to the snow in your yard. No, it’s not from ice melt or spilled antifreeze. The color has everything to do with how light interacts with snow. In a way, yes - but not ...