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Did you know?
The Romans did not use numerals to indicate fractions but instead used words to indicate parts of a whole.
Did you know?
Approximately one in three babies in the United States is now delivered by cesarean section. The number of cesarean sections in the United States has risen 46% since 1996.
Did you know?
Human stomach acid is strong enough to dissolve small pieces of metal such as razor blades or staples.
Did you know?
There are approximately 3 million unintended pregnancies in the United States each year.
Did you know?
Most childhood vaccines are 90–99% effective in preventing disease. Side effects are rarely serious.