HumansImpulse review: An authoritative, if dry, sexual behaviours manual Impulse: The science of sex and desire by psychiatrists Jon Grant and Samuel Chamberlain delivers on its bid to answer our hidden questions about sex, but it can be a little perfunctory Culture
HumansHeart rates synchronise if two people get on well during first date A study of young heterosexual people on blind dates found that those who instantly felt sparks developed synchronised patterns of heart rates and palm sweating News