« previous next »
« previous next »
 

Did you know?

Serum cholesterol testing in adults is recommended every 1 to 5 years. People with diabetes and a family history of high cholesterol should be tested even more frequently.

Did you know?

In the United States, there is a birth every 8 seconds, according to the U.S. Census Bureau's Population Clock.

Did you know?

Many medications that are used to treat infertility are injected subcutaneously. This is easy to do using the anterior abdomen as the site of injection but avoiding the area directly around the belly button.

Did you know?

The toxic levels for lithium carbonate are close to the therapeutic levels. Signs of toxicity include fine hand tremor, polyuria, mild thirst, nausea, general discomfort, diarrhea, vomiting, drowsiness, muscular weakness, lack of coordination, ataxia, giddiness, tinnitus, and blurred vision.

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.

Natural Hazards Natural Hazards
Natural Causes of Climate Change Natural Causes of Climate Change
Natural Healing Timeline Natural Healing Timeline
Evidence of natural selection: Canis lupus familiaris Evidence of natural selection: Canis lupus familiaris
The term “natural,” when used on the packaging of meat and poultry The term “natural,” when used on the packaging of meat and poultry
Experimentally acquired evidence for gene annotation Experimentally acquired evidence for gene annotation
Video: Erythropoietin (EPO)

For a complete list of videos, visit our video library