Even severe heat stress can appear suddenly, so learn the warning signs and how to treat them.

In hot environments, your body may have trouble keeping its temperature at a safe level. As a result, your body temperature rises to unsafe levels. This is heat stress. Heat stress can develop quickly. It can also be very dangerous to your health.

How much do you know about protecting your hearing? Take the quiz to find out.

Learn about how earplugs and earmuffs can protect you from hearing damage.

An audiometric test measures how well you hear. It's quick and painless. The Occupational Safety and Health Administration (OSHA) and your employer may require this test each year. Follow through with it. You can't "fail" a hearing test. The test results just help your employer know whether more hearing protection is required.

Learn about how loudness is measured and when you need hearing protection.

As you age, some hearing loss is normal. You lose more than the ability to hear how loud a sound is. You also lose the ability to hear certain types of sounds. For example, you might not be able to hear some of the high-pitched sounds of a child's voice.

Learn how the parts of your ear work together to help you hear and how damaged hair cells affect your hearing.

Endometrial cancer is cancer that starts in the lining of the uterus. Learn when this cancer forms and treatment choices for this cancer.

Bloodborne pathogens are disease-causing germs carried in blood or other body fluids. If blood or body fluids have touched your eyes, mouth, nose, or any other opening or break in your skin, you've been involved in an exposure incident. Here's what you need to know.