« previous next »
« previous next »
 

Did you know?

Illicit drug use costs the United States approximately $181 billion every year.

Did you know?

Adolescents often feel clumsy during puberty because during this time of development, their hands and feet grow faster than their arms and legs do. The body is therefore out of proportion. One out of five adolescents actually experiences growing pains during this period.

Did you know?

Multiple sclerosis is a condition wherein the body's nervous system is weakened by an autoimmune reaction that attacks the myelin sheaths of neurons.

Did you know?

Although the Roman numeral for the number 4 has always been taught to have been "IV," according to historians, the ancient Romans probably used "IIII" most of the time. This is partially backed up by the fact that early grandfather clocks displayed IIII for the number 4 instead of IV. Early clockmakers apparently thought that the IIII balanced out the VIII (used for the number 8) on the clock face and that it just looked better.

Did you know?

A recent study has found that following a diet rich in berries may slow down the aging process of the brain. This diet apparently helps to keep dopamine levels much higher than are seen in normal individuals who do not eat berries as a regular part of their diet as they enter their later years.

Stages of Health Behavior Change Stages of Health Behavior Change
Fine motor skills involve coordinating the many small muscles of the wrists, hands, and fingers. Fine motor skills involve coordinating the many small muscles of the wrists, hands, and fingers.
Recent Climate Change Recent Climate Change
The impact of climate change on natural ecosystems The impact of climate change on natural ecosystems
Dolphin’s ability to understand an artificial language Dolphin’s ability to understand an artificial language
A Change of Heart A Change of Heart
Video: HIV Infection: Viral life cycle

For a complete list of videos, visit our video library