Bài giảng

Dengue fever feels like a severe case of the flu, including pain in the muscles and joints. The World Health Organization says there may be […]

The human digestive system is full of bacteria — mostly good bacteria. These organisms help break down food so the body can use the nutrients. […]

The latest estimate is that more than three million babies die each year within the first month of life. A report says this is down […]

A few months ago, government researchers released the latest American Time Use Survey. It included the average time per day that Americans spent providing child […]

Not all spies target military, political or economic intelligence. Some spies gather medical intelligence. Presidents, prime ministers and other leaders do not always like to […]

Japanese doctors have begun examining three hundred sixty thousand children in Fukushima Prefecture. The goal is to learn the extent to which radiation may increase […]

Heart disease is the world’s leading cause of death. Yet most cases can be prevented. Doctors say reducing deaths from heart disease will require not […]

The United Nations estimates that the world reached seven billion people on October thirty-first. No one can be sure. The United States Census Bureau does […]