Did you know?
Human stomach acid is strong enough to dissolve small pieces of metal such as razor blades or staples.
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The average human gut is home to perhaps 500 to 1,000 different species of bacteria.
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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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In ancient Rome, many of the richer people in the population had lead-induced gout. The reason for this is unclear. Lead poisoning has also been linked to madness.
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Symptoms of kidney problems include a loss of appetite, back pain (which may be sudden and intense), chills, abdominal pain, fluid retention, nausea, the urge to urinate, vomiting, and fever.
Path of sound vibrations.
The Middle East and Operation Desert Storm
Bereaved spouses studied before loss, at the time of loss, and 18 months after loss show five ...
Apply L stroke under the mandible. Place your middle and ring fingers under the tip of the chin; ...
Frontal section showing location of auditory ossicles in the middle ear
Middle eastern kobab