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  1. 19719

    To argue that the concentrations reported in this study are environmentally relevant is misleading. Those concentrations are usually in groundwater, not surface waters. I’ve been involved in the environmental field for almost 20 years and have yet to hear of any fish being caught in groundwater. John HarrisSacramento, Calif. Study coauthor Frank von Hippel notes […]

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  2. Bad Vibrations? Ultrasound disturbs mouse brains

    Prolonged and frequent use of fetal ultrasound might lead to abnormal fetal brain development, a study in mice suggests.

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  3. Tech

    Glare gives silicon goose bumps

    New experiments show that fluorescent lights cause undesirable bumpiness on the surface of silicon, identifying what may be a previously unrecognized cause of flaws in microchips that could become increasingly important.