Bài giảng

Sleeping sickness is a deadly disease that infects about sixty thousand people in Africa each year. Now scientists in Scotland say they may have found […]

A new study says fewer women in developing nations are dying of pregnancy-related causes. Researchers estimated how many mothers died during or soon after childbirth […]

Hospitals not only treat infections — they can also cause them. In the United States alone,  the number of infections in hospitals is estimated at […]

South Africa plans to test fifteen million people for H.I.V. by June of next year. That is almost one-third of its population. South Africa has […]

A new study examines and compares adult death rates worldwide over the last forty years. For each country, researchers estimated the probability that a fifteen-year-old […]

Malnutrition remains a serious problem for India. But a new study shows that India’s leading causes of death now also include obesity-related diseases such as […]

Rheumatoid arthritis is a painful disease that can destroy joints. Women are three times more likely to get it than men. Rheumatoid arthritis is considered […]

A.D.H.D. is attention deficit hyperactivity disorder. Government estimates say three to seven percent of school-age children in the United States have it. Adults can also […]

A pacemaker is a small device that doctors place in people with an abnormal heartbeat. If a heart beats too slowly, the pacemaker will use […]

Parents know a nightly bedtime is not always easy to enforce. But researchers say bedtime rules may improve a child’s development. A new study found […]