PhysicsSmallest subversive: Mathematical fight for our world At stake in the fierce 17th-century debate over a mathematical concept was nothing less than our modern world, says Amir Alexander in InfinitesimalCultureLab
MindWhy do we love to organise knowledge into trees? From studying the bible to visualising computer storage, Manuel Lima's sumptuous The Book of Trees explores the tree diagram's appeal for showing information CultureLab