Ultraviolet rays, or UV rays, are a type of radiation emitted from the sun, measured by the electromagnetic spectrum, according to the FDA. There are three different kinds of UV rays.

UV A: The first is UV A, which accounts for 95% of all ultraviolet radiation. UV A can increase your risk for skin cancer and has the ability to pass through car windows and clouds.

Eyes are also highly sensitive to the sun’s rays. Sunglasses offer protection, but not all are created equal. Here’s what to look for. UV protection Only sunglasses labeled as having 99–100% UV light ...

The radiation is a form of energy that scientists measure on a scale called the electromagnetic (EM) spectrum. UV radiation is the portion of the EM spectrum between visible light and X-rays.

When skin cells are overwhelmed by UV damage, they die, triggering an immune response similar to wound healing. The redness, heat and pain of a sunburn, are signs of inflammation as immune cells rush ...

In 2024, UV levels were very high or extreme on 151 days.Here’s everything to know about UV radiation, why it hits harder in Arizona, how it affects human health and ways you can protect yourself: ...

In 2024, UV levels were very high or extreme on 151 days.Here’s everything to know about UV radiation, why it hits harder in Arizona, how it affects human health and ways you can protect yourself: ...

Ultraviolet light has shorter wavelengths than visible light, according to NASA. While much of the sun's harmful radiation is absorbed by the Earth's atmosphere — UV-C rays, the most harmful ...

"Exposure to UV-B rays increases the risk of DNA and other cellular damage in living organisms. Fortunately, about 95% UV-B rays are absorbed by ozone in the Earth's atmosphere," NASA said.

In 2024, UV levels were very high or extreme on 151 days.Here’s everything to know about UV radiation, why it hits harder in Arizona, how it affects human health and ways you can protect yourself: ...

For many of us, the summer season is an excuse to dress down and enjoy the sun. But hot, dry weather brings with it hazards ...