HumansThe hidden rules that determine which friendships matter to us Evolutionary psychologist Robin Dunbar has found that our friendships are governed by secret rules, based on everything from your sex to your sleep schedule. Our unique social fingerprints help determine who we are drawn to, which friendships last and why some friends are ultimately replaceable Features
HumansCan you ever know yourself? Whatever the answer, it is worth trying Studying ourselves gets more complex with every breakthrough in genetics, physics or microbiology, but doing so can help us understand others a little better, too. Leader