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  • Feature

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

    Recognize these rows and columns? You may remember a detail or two about this mighty table’s organization from a long-ago chemistry class. Elements are ordered according to their number of protons, or atomic number. Metals are mostly to the left and nonmetals to the right. The column at the far right holds the noble gases, named for their general unwillingness to interact with other elements...

    01/08/2019 - 11:29 Chemistry, Physics
  • Essay

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

    Every field of science has its favorite anniversary.

    For physics, it’s Newton’s Principia of 1687, the book that introduced the laws of motion and gravity. Biology celebrates Darwin’s On the Origin of Species (1859) along with his birthday (1809). Astronomy fans commemorate 1543, when Copernicus placed the sun at the center of the solar system.

    And for chemistry, no cause for...

    01/08/2019 - 11:29 Chemistry
  • Editor's Note

    The periodic table remains essential after 150 years

    It’s another raw day in St. Petersburg, Russia, but the man striding down the University Embankment along the Neva River isn’t pondering how the icy wind off the Gulf of Finland chills his bones or whether Emperor Alexander II’s reforms will increase salaries for professors like him. Instead, Dmitrii Mendeleev is imagining how he could reveal the chemical underpinnings of the universe...
    01/08/2019 - 07:15 History of Science, Chemistry
  • News

    Green darner dragonflies migrate a bit like monarch butterflies

    The monarch butterfly isn’t the only insect flying up and down North America in a mind-boggling annual migration. Tests show a big, shimmering dragonfly takes at least three generations to make one year’s migratory loop.

    Ecologist Michael Hallworth and his colleagues pieced together the migration of the common green darner, described December 19 in Biology Letters, using data on forms of...

    01/07/2019 - 07:00 Animals, Chemistry
  • Reviews & Previews

    Why a chemistry teacher started a science board game company

    A physicist, a gamer and two editors walk into a bar. No, this isn’t the setup for some joke. After work one night, a few Science News staffers tried out a new board game, Subatomic. This deck-building game combines chemistry and particle physics for an enjoyable — and educational — time.

    Subatomic is simple to grasp: Players use quark and photon cards to build protons, neutrons and...

    11/25/2018 - 09:00 Particle Physics, Chemistry, Science & Society