The familiar sounds of your heart are made by the heart's valves as they open and close.
Did you know?
Everyone has one nostril that is larger than the other.
Did you know?
In 1844, Charles Goodyear obtained the first patent for a rubber condom.
Did you know?
Eat fiber! A diet high in fiber can help lower cholesterol levels by as much as 10%.
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.
Irrigation Technology Can Conserve Water
Digital Planet Tomorrow's Technology and You, Complete, 10E