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Did you know?
Vaccines prevent between 2.5 and 4 million deaths every year.
Did you know?
Thyroid conditions may make getting pregnant impossible.
Did you know?
About 100 new prescription or over-the-counter drugs come into the U.S. market every year.
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?
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.