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  1. Animals

    A protein in mosquito eggshells could be the insects’ Achilles’ heel

    A newly discovered protein found exclusively in mosquitoes may one day help control their numbers.

    By Tina Hesman Saey
  2. Chemistry

    150 years on, the periodic table has more stories than it has elements

    The organized rows and columns of the Periodic Table hide a rich and twisting history.

    By Elizabeth Quill
  3. Chemistry

    How the periodic table went from a sketch to an enduring masterpiece

    150 years ago, Russian chemist Dmitrii Mendeleev created the periodic table of the elements, revolutionizing chemistry.

    By Tom Siegfried
  4. Science & Society

    The periodic table remains essential after 150 years

    Editor in Chief Nancy Shute reflects on the 150th anniversary of the invention of the periodic table by Dmitrii Mendeleev.