Peter Edward (Newcastle) and Andy Sumner (King's College): The Geography of Inequality: Where and by How Much Has Income Distribution Changed Since 1990? Markus Jantti (Abo Akademi) and Stephen P. Jenkins (LSE): Income Mobility. From New Left Review, the emergence of a global “dangerous class”? Jan Breman reviews The Precariat: The New Dangerous Class by Guy Standing. Carlo Bordoni on why the concept of class is an invention of the modern spirit. Marx is back: The global working class is starting to unite — and that's a good thing. Kathleen Geier on ten facts you should know about global economic inequality. From Wonblog, American inequality is on the rise — but global inequality is falling; and Ezra Klein on 10 startling facts about global wealth inequality. Richer nations' citizens work less than they did in 1990 on average. Uber-warehouses for the ultra-rich: Ever more wealth is being parked in fancy storage facilities — for some customers, they are an attractive new breed of tax haven. Seven dozen rich people have as much money as 3.5 billion poor people. Even as workers in the US and other countries have seen their incomes plummet, the combined net worth of the world’s billionaires has doubled since 2009. Ben Blatt and Nicholas Duchesne on the most exclusive circles: Sorting the world’s top 50 billionaires by age, location, how they got their moolah, and more. Jack Santa Barbara reviews The Trouble with Billionaires: How the Super-Rich Hijacked the World (and How We Can Take It Back) by Linda McQuaig and Neil Brooks. Kevin Roose on what Oxfam should have told the billionaires of Davos. Christopher Dickey on how income inequality was quickly forgotten at Davos.