A study of Batek hunter-gatherers from Malaysia shows how laughter can shape our ethical values.
A new Bollywood movie based on the story of an Indian entrepreneur who created affordable sanitary pads is helping to counter myths and taboos around menstruation.
American comedian Larry David has drawn fire for his jokes about the Holocaust. But he draws on a long tradition of Jewish humour.
The BBC's dark drama reveals just how thin the veneer of middle-class respectability can be.