« previous next »
« previous next »
 

Did you know?

There are more bacteria in your mouth than there are people in the world.

Did you know?

As the western states of America were settled, pioneers often had to drink rancid water from ponds and other sources. This often resulted in chronic diarrhea, causing many cases of dehydration and death that could have been avoided if clean water had been available.

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?

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?

The calories found in one piece of cherry cheesecake could light a 60-watt light bulb for 1.5 hours.

(a) With few ticks, moose retain a brown coat; (b) at high numbers of ticks, moose self-groom, destr (a) With few ticks, moose retain a brown coat; (b) at high numbers of ticks, moose self-groom, destr
Lead Plumbing Lead Plumbing
Memory saver. The part numbers represent components from Radio Shack®. Memory saver. The part numbers represent components from Radio Shack®.
Platelet-activating factor Platelet-activating factor
How to combine approximate and exact numbers when considering significant digits How to combine approximate and exact numbers when considering significant digits
Excessive video gaming decrease social and physical development in a child Excessive video gaming decrease social and physical development in a child
Video: Alternative Energy Sources

For a complete list of videos, visit our video library