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Pope Sylvester II tried to introduce Arabic numbers into Europe between the years 999 and 1003, but their use did not catch on for a few more centuries, and Roman numerals continued to be the primary number system.
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Asthma cases in Americans are about 75% higher today than they were in 1980.
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Vampire bats have a natural anticoagulant in their saliva that permits continuous bleeding after they painlessly open a wound with their incisors. This capillary blood does not cause any significant blood loss to their victims.
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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 calories found in one piece of cherry cheesecake could light a 60-watt light bulb for 1.5 hours.