Reporting in Science, Gabriel Villar and colleagues have turned tiny water droplets into cooperating networks that can pass electrical signals and do mechanical work. Villar says that in theory, water droplet networks could be used as artificial tissues.
Surveys show a marked rise in the diagnosis of attention deficit hyperactivity disorder, or ADHD, among the nation's youth. William Graf, a professor of pediatrics and neurology at Yale School of Medicine, discusses the surge in ADHD diagnosis and its potential implications.
The ruling could end a more than decade-long battle that has spanned two administrations. The decision overturns a controversial 2011 action by Secretary of Health and Human Services Kathleen Sebelius overruling the Food and Drug Administration's decision to allow sale of morning-after pill without a prescription or regard for a person's age.
Philosophers, poets and psychologists have long shared a fascination with dreams. Now Japanese scientists have scanned the brains of dreaming volunteers to create a lexicon of imagery that can be used to detect and decode dreams while a person sleeps.
The Food and Drug Administration says it can't keep up with all the dietary supplements that claim to enhance sexual performance. Many have been found to contain potentially harmful ingredients, so the agency is warning people to beware of the entire bunch.
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