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  1. Life

    Pollen-deprived bumblebees may speed up plant blooming by biting leaves

    In a pollen shortage, some bees nick holes in tomato leaves that accelerate flowering, and pollen production, by weeks.

    By Susan Milius
  2. Health & Medicine

    There are two versions of the coronavirus. One’s not more dangerous than the other

    Factors such as a person’s age and white blood cell counts matter more for disease severity when it comes to COVID-19, a study finds.

    By Tina Hesman Saey
  3. Earth

    Up to 220 million people globally may be at risk of arsenic-contaminated water

    A new world map highlights possible hot spots of arsenic contamination in groundwater.

    By Carolyn Gramling
  4. Space

    Stunning images of swirling gas and dust may show a planet forming

    Infrared images show a spiral of gas and dust around a star 520 light-years away.