« previous next »
« previous next »
 

Did you know?

Although puberty usually occurs in the early teenage years, the world's youngest parents were two Chinese children who had their first baby when they were 8 and 9 years of age.

Did you know?

If all the neurons in the human body were lined up, they would stretch more than 600 miles.

Did you know?

In the ancient and medieval periods, dysentery killed about ? of all babies before they reach 12 months of age. The disease was transferred through contaminated drinking water, because there was no way to adequately dispose of sewage, which contaminated the water.

Did you know?

To maintain good kidney function, you should drink at least 3 quarts of water daily. Water dilutes urine and helps prevent concentrations of salts and minerals that can lead to kidney stone formation. Chronic dehydration is a major contributor to the development of kidney stones.

Did you know?

There used to be a metric calendar, as well as metric clocks. The metric calendar, or "French Republican Calendar" divided the year into 12 months, but each month was divided into three 10-day weeks. Each day had 10 decimal hours. Each hour had 100 decimal minutes. Due to lack of popularity, the metric clocks and calendars were ended in 1795, three years after they had been first marketed.

Domestic cat Domestic cat
Cushing syndrome. This syndrome includes the symptoms of obesity, moon face, hyperglycemia, and musc Cushing syndrome. This syndrome includes the symptoms of obesity, moon face, hyperglycemia, and musc
Functional Groups Functional Groups
Funeral Rituals and Practices among U.S. Cultural Groups Funeral Rituals and Practices among U.S. Cultural Groups
Vitamins Found Widely in the Food Groups Vitamins Found Widely in the Food Groups
The Major Plant Groups The Major Plant Groups
Video: Mendel's Pea Experiment

For a complete list of videos, visit our video library