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Did you know?
Your heart beats over 36 million times a year.
Did you know?
The horizontal fraction bar was introduced by the Arabs.
Did you know?
Asthma cases in Americans are about 75% higher today than they were in 1980.
Did you know?
Urine turns bright yellow if larger than normal amounts of certain substances are consumed; one of these substances is asparagus.
Did you know?
The National Institutes of Health have supported research into acupuncture. This has shown that acupuncture significantly reduced pain associated with osteoarthritis of the knee, when used as a complement to conventional therapies.