Human neurons are so small that they require a microscope in order to be seen. However, some neurons can be up to 3 feet long, such as those that extend from the spinal cord to the toes.
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Women are two-thirds more likely than men to develop irritable bowel syndrome. This may be attributable to hormonal changes related to their menstrual cycles.
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People who have myopia, or nearsightedness, are not able to see objects at a distance but only up close. It occurs when the cornea is either curved too steeply, the eye is too long, or both. This condition is progressive and worsens with time. More than 100 million people in the United States are nearsighted, but only 20% of those are born with the condition. Diet, eye exercise, drug therapy, and corrective lenses can all help manage nearsightedness.
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Most childhood vaccines are 90–99% effective in preventing disease. Side effects are rarely serious.
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More than 34,000 trademarked medication names and more than 10,000 generic medication names are in use in the United States.
Amazing NASA Pictures Collection
Graphing Psychological Data
The material safety data sheet (MSDS) for sulfuric acid showing the detailed technical information ...
