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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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Prostaglandins were first isolated from human semen in Sweden in the 1930s. They were so named because the researcher thought that they came from the prostate gland. In fact, prostaglandins exist and are synthesized in almost every cell of the body.

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Bacteria have been found alive in a lake buried one half mile under ice in Antarctica.

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More than 150,000 Americans killed by cardiovascular disease are younger than the age of 65 years.

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Cyanide works by making the human body unable to use oxygen.

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