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Did you know?
The human body produces and destroys 15 million blood cells every second.
Did you know?
In 1864, the first barbiturate (barbituric acid) was synthesized.
Did you know?
Bacteria have flourished on the earth for over three billion years. They were the first life forms on the planet.
Did you know?
There are 20 feet of blood vessels in each square inch of human skin.
Did you know?
According to the National Institute of Environmental Health Sciences, lung disease is the third leading killer in the United States, responsible for one in seven deaths. It is the leading cause of death among infants under the age of one year.