« previous next »
« previous next »
 

Did you know?

Eating carrots will improve your eyesight. Carrots are high in vitamin A (retinol), which is essential for good vision. It can also be found in milk, cheese, egg yolks, and liver.

Did you know?

In Eastern Europe and Russia, interferon is administered intranasally in varied doses for the common cold and influenza. It is claimed that this treatment can lower the risk of infection by as much as 60–70%.

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?

About 100 new prescription or over-the-counter drugs come into the U.S. market every year.

Did you know?

Although the Roman numeral for the number 4 has always been taught to have been "IV," according to historians, the ancient Romans probably used "IIII" most of the time. This is partially backed up by the fact that early grandfather clocks displayed IIII for the number 4 instead of IV. Early clockmakers apparently thought that the IIII balanced out the VIII (used for the number 8) on the clock face and that it just looked better.

Democritus' atomist philosophy was later adopted by Epicurus (341–270 BCE). Democritus' atomist philosophy was later adopted by Epicurus (341–270 BCE).
The tolerance of male lions towards the cubs varies. They are, however, generally more likely to sha The tolerance of male lions towards the cubs varies. They are, however, generally more likely to sha
Federal vs state govenment Federal vs state govenment
The environmental policy changes over time The environmental policy changes over time
B Cells: Development of Self-Recognition and Self-Tolerance B Cells: Development of Self-Recognition and Self-Tolerance
Markets and Institutions Market Story Problem Markets and Institutions Market Story Problem
Video: Isovolumetric VC, Ventricular ejection, Isovolumetric & Passive ventricular filling

For a complete list of videos, visit our video library