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  1. Health & Medicine

    Zealous Adherence: Erratic HIV therapy hasn’t fueled resistance

    Among people infected with HIV, those who don't consistently take their antiretroviral drugs as prescribed are no more likely to develop drug-resistant HIV than are patients who adhere to their treatment schedule.

    By Ben Harder
  2. Materials Science

    Sopping Up Heavy Metal: Hybrid material removes mercury from water

    A hybrid material consisting of a bacterial protein and a temperature-sensitive polymer proves efficient at removing mercury from contaminated water.

    By Alexandra Goho
  3. Animals

    Skin Chemistry: Poison frogs upgrade toxins from prey

    For the first time, scientists have found a poisonous frog that takes up a toxin from its prey and then tweaks the chemical to make it a more deadly weapon.