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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.
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There are approximately 3 million unintended pregnancies in the United States each year.
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Although puberty usually occurs in the early teenage years, the world's youngest parents were two Chinese children who had their first baby when they were 8 and 9 years of age.
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Human stomach acid is strong enough to dissolve small pieces of metal such as razor blades or staples.
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After a vasectomy, it takes about 12 ejaculations to clear out sperm that were already beyond the blocked area.