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Cyanide works by making the human body unable to use oxygen.
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.
A recent study has found that following a diet rich in berries may slow down the aging process of the brain. This diet apparently helps to keep dopamine levels much higher than are seen in normal individuals who do not eat berries as a regular part of their diet as they enter their later years.
The Romans did not use numerals to indicate fractions but instead used words to indicate parts of a whole.
The longest a person has survived after a heart transplant is 24 years.