LifeNo more goody two shoes: Why true altruism can’t exist If only the fittest survive, why do good deeds for no return? The enduring mystery of altruism goes to the heart of how evolution does – and doesn't – work Features
TechnologyPsychological studies that rely on Amazon workers may be wrong People seem to be answering survey questions randomly on Amazon's crowdsourcing website, which could mean many academic studies are wrong News