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Did you know?
There are more nerve cells in one human brain than there are stars in the Milky Way.
Did you know?
Bacteria have been found alive in a lake buried one half mile under ice in Antarctica.
Did you know?
Acute bronchitis is an inflammation of the breathing tubes (bronchi), which causes increased mucus production and other changes. It is usually caused by bacteria or viruses, can be serious in people who have pulmonary or cardiac diseases, and can lead to pneumonia.
Did you know?
Pubic lice (crabs) are usually spread through sexual contact. You cannot catch them by using a public toilet.
Did you know?
All adults should have their cholesterol levels checked once every 5 years. During 2009–2010, 69.4% of Americans age 20 and older reported having their cholesterol checked within the last five years.