UV light reveals a version of the world humans were never meant to see. Everyday objects, clothing, skin, and even surfaces you think are clean suddenly look completely different under ultraviolet.

How sunny is too sunny? Sometimes it's tough to know, but as temperatures reach new highs in Michigan, understanding the UV index can help you avoid sunburns and heat-related illnesses. The sun's ...

PHOENIX — Ultraviolet light is a type of electromagnetic radiation. It's responsible for the glow in a black light poster, or the bronze on your skin from a summer tan. Overexposure to UV radiation ...

Wearing sunscreen all year round can help protect your skin from harmful UV rays. CREDIT: DieterMeyrl via Getty Images. Get the Popular Science daily newsletter💡 ...

The UV index measures the intensity of skin-damaging ultraviolet radiation at the Earth's surface. The UV index ranges from 0 to 11-plus, with higher values indicating greater risk of sunburn and skin ...