"The student expressed concern about harmful rays," he said.

But it is the chemicals used to make the lenses that determine their ability to shield the eyes from harmful rays, not the color.

"This new information will help consumers know which products offer the best protection from the harmful rays of the sun," Velazquez says.

The chemicals are believed to destroy ozone, which blocks the sun's harmful rays.

These are the harmful rays which cause skin cancer.

Your skin is your body's natural armor, protecting you from the sun's harmful rays.

My guess is the next best seller will be a leadlining case to protect users from harmful rays.

On the one hand, melanin provides natural protection from the sun's harmful rays.

Sunscreen with a rating of 25 or more acts as an effective shield against harmful rays from the sun.

Radon is radioactive, meaning that it can give off harmful rays.