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  1. Physics

    Shaping up the sun

    The most accurate measurements yet of the sun’s shape show that magnetic activity plays a role in making the sun appear more oval than it really is.

    By Ron Cowen
  2. Life

    Bicoastal Atlantic bluefin tuna

    Mediterranean and western Atlantic bluefin tuna spend more time in mixed groups than previously thought, suggesting management strategies need to be revisited.

    By Rachel Ehrenberg
  3. Physics

    Diamonds engage at the nano scale

    Manipulating the quantum properties of diamond impurities makes diamond into a kind of microscope that could, for example, reveal the inner working of cells.

    By Davide Castelvecchi
  4. Health & Medicine

    Don’t forget diet composition

    Caloric restriction, an antiaging technique, fails to lower levels of IGF-1, a growth factor that, in high amounts, is linked to cancer in humans.