Bumpology: The science of pregnancy

New Scientist reporter Linda Geddes is knocked up. Instead of simply marveling at the f&*#@ing miracle of birth, Geddes is tracking the science behind her pregnancy, in a weekly column called Bumpology. The most recent entry focuses on the facts behind a variety of (non-medical) tricks that are supposed to help you predict the sex of your baby. Fascinatingly, researchers in Sweden and Denmark have found that horrific bouts of morning sickness are correlated with girl babies—possibly because of higher levels of human chorionic gonadotropin in women carrying girls.