This week “The Economist explains” is given over to economics. For each of six days until Saturday this blog will publish a short explainer on a seminal idea. ECONOMISTS can usually explain the past ...

Physicists have achieved a breakthrough by using a 58-qubit quantum computer to create and observe a long-theorized but never-before-seen quantum phase of matter: a Floquet topologically ordered state ...

Many situations in economics are complicated and competitive. New research raises the question of whether many theories in economics may suffer from the very fundamental problem that the key ...