There are 60,000 miles of blood vessels in every adult human.
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About 100 new prescription or over-the-counter drugs come into the U.S. market every year.
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Cyanide works by making the human body unable to use oxygen.
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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.
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There are more sensory neurons in the tongue than in any other part of the body.
layers of the skull to memorize for intracranial questions
Researchers and Research Spending, 2009
The Prison Study
Biology Questions
The study of how traits such as flower color are passed from generation to generation provided the m