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  1. Tech

    A Breath of Fresh Air: Bacteria rid sewage of its stink

    Wastewater-treatment plants can use hydrogen sulfide-degrading bacteria instead of chemicals to reduce odors.

    By John Travis

  2. Harvesting Intelligence: IQ gains may reach rural Kenya’s kids

    Researchers say they've uncovered a dramatic IQ increase among Kenyan children over a recent 14-year period that may be due to environmental factors such as better nutrition and a greater parental emphasis on schooling.

    By Bruce Bower

  3. 19319

    Your article says, correctly, that our research group performed ultrasound of the main blood vessel of the women’s arms as a measure of vessel-cell function throughout the body. However, we identified women at risk of preeclampsia by performing ultrasound tests to assess blood-flow restriction of arteries in the uterus during the second trimester of pregnancy.