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Only 12 hours after an egg cell is fertilized by a sperm cell, the egg cell starts to divide. As it continues to divide, it moves along the fallopian tube toward the uterus at about 1 inch per day.
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Approximately 500,000 babies are born each year in the United States to teenage mothers.
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In 1864, the first barbiturate (barbituric acid) was synthesized.
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Bacteria have flourished on the earth for over three billion years. They were the first life forms on the planet.
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The term bacteria was devised in the 19th century by German biologist Ferdinand Cohn. He based it on the Greek word "bakterion" meaning a small rod or staff. Cohn is considered to be the father of modern bacteriology.