Did you know?

If all the neurons in the human body were lined up, they would stretch more than 600 miles.

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?

People about to have surgery must tell their health care providers about all supplements they take.

Did you know?

It is difficult to obtain enough calcium without consuming milk or other dairy foods.

Did you know?

Bacteria have been found alive in a lake buried one half mile under ice in Antarctica.

For a complete list of videos, visit our video library