« previous next »
« previous next »
 

Did you know?

The Centers for Disease Control and Prevention (CDC) was originally known as the Communicable Disease Center, which was formed to fight malaria. It was originally headquartered in Atlanta, Georgia, since the Southern states faced the worst threat from malaria.

Did you know?

According to the National Institute of Environmental Health Sciences, lung disease is the third leading killer in the United States, responsible for one in seven deaths. It is the leading cause of death among infants under the age of one year.

Did you know?

Chronic marijuana use can damage the white blood cells and reduce the immune system's ability to respond to disease by as much as 40%. Without a strong immune system, the body is vulnerable to all kinds of degenerative and infectious diseases.

Did you know?

Women are two-thirds more likely than men to develop irritable bowel syndrome. This may be attributable to hormonal changes related to their menstrual cycles.

Did you know?

Medication errors are three times higher among children and infants than with adults.

A hypothetical hybrid zone. A hypothetical hybrid zone.
Cottontails' ears have developed to hear even whisper-quiet sounds at incredible distances. Cottontails' ears have developed to hear even whisper-quiet sounds at incredible distances.
(A) The nine regions of the abdominopelvic cavity. (B) The four regions of the abdomen, which are re (A) The nine regions of the abdominopelvic cavity. (B) The four regions of the abdomen, which are re
In older adults, higher education is related to higher levels of ego development. In older adults, higher education is related to higher levels of ego development.
Fetal Development Timeline Fetal Development Timeline
Seasonal Changes in a Temperate Zone Lake Seasonal Changes in a Temperate Zone Lake
Video: The pH scale - Strong acids and Weak acids

For a complete list of videos, visit our video library