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  1. 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
  2. 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
  3. 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. But cutting protein along with calories does decrease IGF-1.

    By Tina Hesman Saey
  4. Life

    Old fish, new fish, red fish, blue fish

    A difference in vision in cichlids in Lake Victoria could be pushing a species to split into two.