IN AUGUST 1960 Wolfgang Stolper, an American economist working for Nigeria’s development ministry, embarked on a tour of the country’s poor northern region, a land of “dirt and dignity”, long ruled by ...

THE STOLPER-SAMUELSON THEOREM….Over at Max’s place, Josh Bivens tells us about something called the Stolper-Samuelson Theorem, which predicts that workers without a college degree always get screwed ...

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. DOES trade hurt wages? Or, more precisely ...