Weather inversion in London in 1952 caused over 4,000 deaths.

A number of studies, including the study of six cities, suggest that the largest particles are the most dangerous because they can invade the body’s natural defenses and penetrate deep into the lungs becoming a chronic source of irritation.

It is easy to place a value on life.

Overweight and obesity could reverse public health improvements achieved in the 20th Century.

The regulatory agency that oversees the health and safety of the workplace is OSHA.

The leading cause of death in the US is tuberculosis.

The highest source of radiation exposure today comes from radon gas.

Which of these is NOT true of outpatient care in the U.S.?

Pap smears are a safe, reliable, and 100% accurate method of screening for cervical cancer.

The Framingham study started in 1948 with 5000 participants.