« previous next »
« previous next »
 

Did you know?

The most common childhood diseases include croup, chickenpox, ear infections, flu, pneumonia, ringworm, respiratory syncytial virus, scabies, head lice, and asthma.

Did you know?

Chronic marijuana use can damage the white blood cells and reduce the immune system's ability to respond to disease by as much as 40%. Without a strong immune system, the body is vulnerable to all kinds of degenerative and infectious diseases.

Did you know?

More than 150,000 Americans killed by cardiovascular disease are younger than the age of 65 years.

Did you know?

The most dangerous mercury compound, dimethyl mercury, is so toxic that even a few microliters spilled on the skin can cause death. Mercury has been shown to accumulate in higher amounts in the following types of fish than other types: swordfish, shark, mackerel, tilefish, crab, and tuna.

Did you know?

The liver is the only organ that has the ability to regenerate itself after certain types of damage. As much as 25% of the liver can be removed, and it will still regenerate back to its original shape and size. However, the liver cannot regenerate after severe damage caused by alcohol.

In 2009, historian Woody Holton described how Abigail Adams shrewdly invested in the Continental Con In 2009, historian Woody Holton described how Abigail Adams shrewdly invested in the Continental Con
The process of phagocytosis: a phagocyte engulfing bacteria or other foreign material. The process of phagocytosis: a phagocyte engulfing bacteria or other foreign material.
Government in America: People, Politics, and Policy, AP Government in America: People, Politics, and Policy, AP
American Government: Roots and Reform, 2009 Edition American Government: Roots and Reform, 2009 Edition
American Government: Roots and Reform, AP* Edition, 12th Edition American Government: Roots and Reform, AP* Edition, 12th Edition
The executive legislative "struggle" over foreign policy The executive legislative "struggle" over foreign policy
Video: Hershey Chase Experiments

For a complete list of videos, visit our video library