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The first documented use of surgical anesthesia in the United States was in Connecticut in 1844.
Malaria mortality rates are falling. Increased malaria prevention and control measures have greatly improved these rates. Since 2000, malaria mortality rates have fallen globally by 60% among all age groups, and by 65% among children under age 5.
The Romans did not use numerals to indicate fractions but instead used words to indicate parts of a whole.
About 100 new prescription or over-the-counter drugs come into the U.S. market every year.
Certain chemicals, after ingestion, can be converted by the body into cyanide. Most of these chemicals have been removed from the market, but some old nail polish remover, solvents, and plastics manufacturing solutions can contain these substances.

