« previous next »
« previous next »
 

Did you know?

The highest suicide rate in the United States is among people ages 65 years and older. Almost 15% of people in this age group commit suicide every year.

Did you know?

Human neurons are so small that they require a microscope in order to be seen. However, some neurons can be up to 3 feet long, such as those that extend from the spinal cord to the toes.

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?

Eat fiber! A diet high in fiber can help lower cholesterol levels by as much as 10%.

Did you know?

On average, the stomach produces 2 L of hydrochloric acid per day.

Tree species richness in North America is correlated with evapotranspiration rate. Tree species richness in North America is correlated with evapotranspiration rate.
Maximal Heart Rate Over Time Maximal Heart Rate Over Time
Static Stability & Environmental Lapse Rate Static Stability & Environmental Lapse Rate
Fluidization - Reaction Rate Chart Fluidization - Reaction Rate Chart
Most drugs exhibit first-order elimination, in which the rate of drug elimination is equivalent to ... Most drugs exhibit first-order elimination, in which the rate of drug elimination is equivalent to ...
Total Fertility Rate in the United States, 1860–2008 Total Fertility Rate in the United States, 1860–2008
Video: Cell mediated immune response to a viral infection Animation

For a complete list of videos, visit our video library