logo

tools

  • feminized human skulls faces Cieri

    Before We Painted Like Picasso, We Had to Share Like Gandhi

    A comparison of the facial features of ancient modern humans (left) to more recent modern humans (right). Modern specimens have a less prominent brow ridge and a shorted upper face. Researchers suspect these changes were caused by a decrease of testosterone.Robert Cieri   In Earth’s not-so-distant fossil record of human ancestors, an important change appears […]

  • hand_evolution_052013

    Are Humans the Greatest Things Created by the Human Hand?

    What a waste are two thumbs on the space bar. There they sit, nearly flaccid, punctuating the end of each word, awaiting the call to crack stone or to use sharp flakes to incise wood. It is easy to think of other traits as making us human. We talk, use metaphors, empathize, follow fashions, laugh, play […]