Experts have long known that prolonged exposure to ultraviolet A (UV-A) rays can raise the odds for skin cancer and cataracts.

Experts have long known that prolonged exposure to ultraviolet A (UV-A) rays can raise the odds for skin cancer and cataracts.

While windshield windows tended to offer good protection against UV-A, protection was lower and inconsistent for the side windows of cars, the study findings showed.