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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.
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.
More than 30% of American adults, and about 12% of children utilize health care approaches that were developed outside of conventional medicine.
Women are 50% to 75% more likely than men to experience an adverse drug reaction.
This year, an estimated 1.4 million Americans will have a new or recurrent heart attack.