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

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When blood is deoxygenated and flowing back to the heart through the veins, it is dark reddish-blue in color. Blood in the arteries that is oxygenated and flowing out to the body is bright red. Whereas arterial blood comes out in spurts, venous blood flows.

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Illness; diuretics; laxative abuse; hot weather; exercise; sweating; caffeine; alcoholic beverages; starvation diets; inadequate carbohydrate consumption; and diets high in protein, salt, or fiber can cause people to become dehydrated.

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The first oncogene was discovered in 1970 and was termed SRC (pronounced "SARK").

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

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