« previous next »
« previous next »
 

Did you know?

Children with strabismus (crossed eyes) can be treated. They are not able to outgrow this condition on their own, but with help, it can be more easily corrected at a younger age. It is important for infants to have eye examinations as early as possible in their development and then another at age 2 years.

Did you know?

A cataract is a clouding of the eyes' natural lens. As we age, some clouding of the lens may occur. The first sign of a cataract is usually blurry vision. Although glasses and other visual aids may at first help a person with cataracts, surgery may become inevitable. Cataract surgery is very successful in restoring vision, and it is the most frequently performed surgery in the United States.

Did you know?

When blood is deoxygenated and flowing back to the heart through the veins, it is dark reddish-blue in color. Blood in the arteries that is oxygenated and flowing out to the body is bright red. Whereas arterial blood comes out in spurts, venous blood flows.

Did you know?

The average adult has about 21 square feet of skin.

Did you know?

You should not take more than 1,000 mg of vitamin E per day. Doses above this amount increase the risk of bleeding problems that can lead to a stroke.

Death Valley Death Valley
Healed bone fractures can provide clues about activities and fresh fractures can yield information a Healed bone fractures can provide clues about activities and fresh fractures can yield information a
After the death of a loved one, family members report concerns about last place of care. After the death of a loved one, family members report concerns about last place of care.
The Race-Ethnicity of the 3,170 Prisoners On Death Row The Race-Ethnicity of the 3,170 Prisoners On Death Row
Ten Leading Causes of Death in Low-Income Countries, 2008 Ten Leading Causes of Death in Low-Income Countries, 2008
Death cap mushroom Death cap mushroom
Video: Calvin cycle (The light-independent reactions )

For a complete list of videos, visit our video library