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  1. Chemistry

    Evaporating mixtures of two liquids create hypnotic designs

    Through the magic of surface tension, mixtures of two liquids form fingerlike protrusions and other patterns as droplets evaporate.

    By Maria Temming
  2. Space

    Cecilia Payne-Gaposchkin revealed stars’ composition and broke gender barriers

    The book ‘What Stars Are Made Of’ celebrates the life of astronomer Cecilia Payne-Gaposchkin.

    By Christopher Crockett
  3. Health & Medicine

    What the new phase of the coronavirus outbreak in the U.S. means for you

    U.S. health experts warn there are probably many undetected COVID-19 cases already here, raising chances the disease will soon be widespread.

    By Tina Hesman Saey, Aimee Cunningham and Erin Garcia de Jesús
  4. Physics

    Listening to soap bubbles pop reveals the physics behind the bursts

    The quiet, high-pitched sound made by a popping soap bubble reveals the forces that occur during the bubble’s demise.