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Your heart beats over 36 million times a year.
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The first documented use of surgical anesthesia in the United States was in Connecticut in 1844.
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The horizontal fraction bar was introduced by the Arabs.
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This year, an estimated 1.4 million Americans will have a new or recurrent heart attack.
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Although the Roman numeral for the number 4 has always been taught to have been "IV," according to historians, the ancient Romans probably used "IIII" most of the time. This is partially backed up by the fact that early grandfather clocks displayed IIII for the number 4 instead of IV. Early clockmakers apparently thought that the IIII balanced out the VIII (used for the number 8) on the clock face and that it just looked better.