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Did you know?
Asthma is the most common chronic childhood disease in the world. Most children who develop asthma have symptoms before they are 5 years old.
Did you know?
The familiar sounds of your heart are made by the heart's valves as they open and close.
Did you know?
Acetaminophen (Tylenol) in overdose can seriously damage the liver. It should never be taken by people who use alcohol heavily; it can result in severe liver damage and even a condition requiring a liver transplant.
Did you know?
There are more nerve cells in one human brain than there are stars in the Milky Way.
Did you know?
The Romans did not use numerals to indicate fractions but instead used words to indicate parts of a whole.