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Author Question: Over time, a child's complex emotions expand and are directly linked to his cultural environment. ... (Read 59 times) |
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.
It is believed that the Incas used anesthesia. Evidence supports the theory that shamans chewed cocoa leaves and drilled holes into the heads of patients (letting evil spirits escape), spitting into the wounds they made. The mixture of cocaine, saliva, and resin numbed the site enough to allow hours of drilling.
Cytomegalovirus affects nearly the same amount of newborns every year as Down syndrome.
Human kidneys will clean about 1 million gallons of blood in an average lifetime.
Women are 50% to 75% more likely than men to experience an adverse drug reaction.