The UV Index provides a measure of the sun's ultraviolet radiation, a short wavelength of light invisible to humans, that can cause sunburns. Sunburns are a factor that can lead to deadly health ...

UV radiation comes primarily from the sun and is made up of UVA, UVB, and UVC rays. UVC rays do not reach Earth, but both UVA and UVB rays pose health risks. Learn more here.

Effect of the Sun's Rays on the Brain and General System. Share full article. July 27, 1859. Credit... The New York Times Archives. See the article in its original context from July 27, 1859, Page ...

Usually, the effects of UVB rays are delayed or appear a few hours after sun exposure. Most tanning beds use a combination of UVA and UVB rays. Special UVB-only tanning beds may be touted as safe ...

BASKING IN THE sun has been considered a health hazard for at least four decades. The main risk comes from ultraviolet (UV) light, which the Sun emits alongside visible radiation. This can ...

To get through the hottest days of summer, here's how to read the UV index so you know when the sun is most dangerous.

When exposed to direct sunlight, UVA and some UVB rays can penetrate the dermis and, with enough exposure, break down stores of naturally occurring hyaluronic acid, explains Dr. Jessie Cheung, MD ...

Exposure to the sun's UV rays may have a positive effect on fertility in women aged 30 to 40, say scientists.. The ovaries of women in the 'late reproductive' age range were found to secrete more ...

The sun's rays can burn the retina – leading to blindness. Experts say your retina cannot sense pain, so, the effects of the damage would be felt several hours later.