LifeWhen geckos play ball and spiders spar: The strange evolution of fun The ability to play is being spotted in some unexpected creatures, from swans to Komodo dragons. Are they really fooling around? And if so, why do they do it? Features
HumansAmbergris: What fragrant whale excretions tell us about ancient oceans Ancient whale poo, known as ambergris, has long been prized by perfumiers – but it also contains precious information about ancient oceans that could help save today’s whales Features