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According to research, pregnant women tend to eat more if carrying a baby boy. Male fetuses may secrete a chemical that stimulates their mothers to step up her energy intake.
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According to the National Institute of Environmental Health Sciences, lung disease is the third leading killer in the United States, responsible for one in seven deaths. It is the leading cause of death among infants under the age of one year.
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The first oncogene was discovered in 1970 and was termed SRC (pronounced "SARK").
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The horizontal fraction bar was introduced by the Arabs.
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Approximately 500,000 babies are born each year in the United States to teenage mothers.