« previous next »
« previous next »
 

Did you know?

The most destructive flu epidemic of all times in recorded history occurred in 1918, with approximately 20 million deaths worldwide.

Did you know?

Adolescents often feel clumsy during puberty because during this time of development, their hands and feet grow faster than their arms and legs do. The body is therefore out of proportion. One out of five adolescents actually experiences growing pains during this period.

Did you know?

A seasonal flu vaccine is the best way to reduce the chances you will get seasonal influenza and spread it to others.

Did you know?

More than 50% of American adults have oral herpes, which is commonly known as "cold sores" or "fever blisters." The herpes virus can be active on the skin surface without showing any signs or causing any symptoms.

Did you know?

As many as 20% of Americans have been infected by the fungus known as Histoplasmosis. While most people are asymptomatic or only have slight symptoms, infection can progress to a rapid and potentially fatal superinfection.

In 2013, Americans learned that the federal government massively surveys their phone calls and e-mai In 2013, Americans learned that the federal government massively surveys their phone calls and e-mai
Aggregates are people who happen to be in the same place at the same time. Aggregates are people who happen to be in the same place at the same time.
Social Security Payments to Beneficiaries Social Security Payments to Beneficiaries
Factors in Food Security Factors in Food Security
People are living longer today than in previous decades People are living longer today than in previous decades
Why do people hate mathematics? Why do people hate mathematics?
Video: Hormonal feedback loop components & Glucagon (glycogenolysis and gluconeogenesis)

For a complete list of videos, visit our video library