It was 1733 when the poet and philosopher Voltaire met Emilie du Châtelet, a beguiling—and married—aristocrat who would one day popularize Newton’s arcane ideas and pave the way for Einstein’s theories. In an era when women were rarely...
A century and a half after Darwin first proposed an "evolutionary ethics," science has begun to tackle the roots of morality. Just as evolutionary biologists study why we are hungry (to motivate us to eat) or why sex is enjoyable (to motivate us to...