News
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Infants emerge as picky imitators
By the age of 14 months, babies display a feel for evaluating the sensibility of an adult's behavior and either imitating the means to a goal or opting for a simpler way to achieve the same result.
- Health & Medicine
Alzheimer’s vaccine trial is suspended
A drug company in Ireland has halted tests of an experimental vaccine for Alzheimer's disease.
- Tech
Itsy chain turns bitsy gears
A tiny chain with links the size of biological cells offers a new way to deliver power to micromachines.
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Disorder Decline: U.S. mental ills take controversial dip
Far fewer people suffer from mental disorders requiring treatment than was initially indicated by two national surveys.
