Share this on WhatsApp All domestic dogs belong to a single species that descended from wolves—despite vast differences in size, appearance, behavior and temperament among breeds. While dogs first became domesticated tens of thousands of years ago, the breeds we know today are largely the result of selection for certain traits by humans over the […]
Share this on WhatsApp Originally published in June 1968 Credit: Scientific American Advertisement “The disappearance of stones in the urinary tract is particularly well documented in England. Between 1772 and 1816 one in every 38 patients at the Norfolk and Norwich Hospital was under treatment for bladder stones. In the same period so many of […]
Share this on WhatsApp Swarthmore College mathematician Diana Davis, whom I am lucky enough to call a friend, is multitalented. Her combined love of math and running led to an earlier appearance in this blog, where she investigated the question of whether, if you run a marathon at, say, a 7:00 minute per mile pace, must […]