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Did you know?
The familiar sounds of your heart are made by the heart's valves as they open and close.
Did you know?
About 60% of newborn infants in the United States are jaundiced; that is, they look yellow. Kernicterus is a form of brain damage caused by excessive jaundice. When babies begin to be affected by excessive jaundice and begin to have brain damage, they become excessively lethargic.
Did you know?
In 1864, the first barbiturate (barbituric acid) was synthesized.
Did you know?
Pubic lice (crabs) are usually spread through sexual contact. You cannot catch them by using a public toilet.
Did you know?
Bacteria have been found alive in a lake buried one half mile under ice in Antarctica.