Peter Watts: No Brainer.
For decades now, I have been haunted by the grainy, black-and-white x-ray of a human skull. It is alive but empty, with a cavernous fluid-filled space where the brain should be. A thin layer of brain tissue lines that cavity like an amniotic sac. The image hails from a 1980 review article[PDF] in Science: Roger Lewin, the author, reports that the patient in question had “virtually no brain”. But that’s not what scared me; hydrocephalus is nothing new, and it takes more to creep out this ex-biologist than a picture of Ventricles Gone Wild. What scared me was the fact that this virtually brain-free patient had an IQ of 126.[more inside]
Meditation found to increase brain size (maybe) according to research led by Harvard neuroscientist Sara Lazar. Meanwhile, Atheist Manifesto author Sam Harris recently went on a meditation retreat and seemed to find it pleasant enough.