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In 1844, Charles Goodyear obtained the first patent for a rubber condom.
Increased intake of vitamin D has been shown to reduce fractures up to 25% in older people.
The horizontal fraction bar was introduced by the Arabs.
Children with strabismus (crossed eyes) can be treated. They are not able to outgrow this condition on their own, but with help, it can be more easily corrected at a younger age. It is important for infants to have eye examinations as early as possible in their development and then another at age 2 years.
Computer programs are available that crosscheck a new drug's possible trade name with all other trade names currently available. These programs detect dangerous similarities between names and alert the manufacturer of the drug.