Some interesting radio programs on NPR in the past few days: one on the research into gender differences in the brain (following the uproar caused by Harvard President Lawrence Summers's remarks on why there aren't more women in science);one on new research into the brain's anger response mechanism, and the possible benefits this study may hold for understanding autistic and schizophrenic patients; and one on a new study showing that older beagles, when given proper diet and stimulation, can delay the effects of aging.