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Each year in the United States, there are approximately six million pregnancies. This means that at any one time, about 4% of women in the United States are pregnant.
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Increased intake of vitamin D has been shown to reduce fractures up to 25% in older people.
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In 1835 it was discovered that a disease of silkworms known as muscardine could be transferred from one silkworm to another, and was caused by a fungus.
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In 1864, the first barbiturate (barbituric acid) was synthesized.
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The longest a person has survived after a heart transplant is 24 years.