« previous next »
« previous next »
 

Did you know?

Sperm cells are so tiny that 400 to 500 million (400,000,000–500,000,000) of them fit onto 1 tsp.

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?

Drug abusers experience the following scenario: The pleasure given by their drug (or drugs) of choice is so strong that it is difficult to eradicate even after years of staying away from the substances involved. Certain triggers may cause a drug abuser to relapse. Research shows that long-term drug abuse results in significant changes in brain function that persist long after an individual stops using drugs. It is most important to realize that the same is true of not just illegal substances but alcohol and tobacco as well.

Did you know?

There are more nerve cells in one human brain than there are stars in the Milky Way.

Did you know?

Urine turns bright yellow if larger than normal amounts of certain substances are consumed; one of these substances is asparagus.

Testing the effects of long-term fertilizing on inter-actions between mycorrhizal fungi and plants o Testing the effects of long-term fertilizing on inter-actions between mycorrhizal fungi and plants o
Effects of Leptin on Obesity in Mice of the Ob Strain Effects of Leptin on Obesity in Mice of the Ob Strain
Effects of Therapy for Stuttering A functional MRI scan shows regions of the superior temporal lobe Effects of Therapy for Stuttering A functional MRI scan shows regions of the superior temporal lobe
Disease Epidemiology and Immunizations Disease Epidemiology and Immunizations
Pathology of the Digestive System Pathology of the Digestive System
Raynaud’s disease. Raynaud’s disease.
Video: Miller's reaction chamber experiment Animation

For a complete list of videos, visit our video library