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  1. Anthropology

    Ancient head case

    A 1.8-million-year-old Homo erectus skullcap came from a 1-year-old child whose brain grew at a rate more like that of chimpanzees than of people.

    By Bruce Bower

  2. 19464

    I was pleased to read that one of the most mathematically pretty sphere-stacking arrangements (the lovely 24-cell) occurs in four dimensions. The nice thing about four dimensions is that, by letting time be one dimension and using a good three-dimensional computer-graphics package, the arrangement can be viewed on a computer. Dan RyanPhiladelphia, Pa.

    By Science News
  3. Math

    Oddballs

    Mathematicians have found that it's easier to pack spheres in some dimensions than it is in others.

    By Erica Klarreich

  4. 19463

    Surely, you mean ale.