Researchers have achieved the first mapping of a fetus's DNA. The breakthrough opens the potential to choose a child's characteristics. Such power, however, should also force questions about 'playing God.'
Adults are taking stimulants like Ritalin and Adderall, normally used to treat serious medical conditions, to boost their concentration and job performance. Critics ask: Is it making Americans too dependent on their medicine cabinets?
Why rules against envy are so vital to society.