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

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Egg cells are about the size of a grain of sand. They are formed inside of a female's ovaries before she is even born.

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Approximately 500,000 babies are born each year in the United States to teenage mothers.

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Chronic marijuana use can damage the white blood cells and reduce the immune system's ability to respond to disease by as much as 40%. Without a strong immune system, the body is vulnerable to all kinds of degenerative and infectious diseases.

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The first successful kidney transplant was performed in 1954 and occurred in Boston. A kidney from an identical twin was transplanted into his dying brother's body and was not rejected because it did not appear foreign to his body.

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