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Author Question: In the United States, the first cooperative nursery school was established at which of the ... (Read 38 times) |
Human stomach acid is strong enough to dissolve small pieces of metal such as razor blades or staples.
In 1844, Charles Goodyear obtained the first patent for a rubber condom.
Between 1999 and 2012, American adults with high total cholesterol decreased from 18.3% to 12.9%
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.
The word drug comes from the Dutch word droog (meaning "dry"). For centuries, most drugs came from dried plants, hence the name.