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By Moritz Schularick and Alan M. Taylor

Are credit bubbles dangerous? Long-run historical data reveal that important changes have taken place in the financial system over the past decades, setting in train an unprecedented expansion in the role of credit in the macroeconomy. It is mishap of history that just at the time when credit mattered more than ever before, the reigning doctrine had sentenced it to playing no constructive role in central bank policies. Over the past 140 years, episodes of financial instability were often the result of “credit booms gone wrong”. Read more

By Kevin O’Rourke

This period last year seems an age ago. The fear then was of resource scarcity: of rising oil prices and increasing food prices, as biofuels crowded out food production and population continued to grow. Environmental worries also reflect resource scarcity, albeit of another type. Once this crisis is over, these concerns will inevitably return to the agenda, and could easily dominate it for the rest of this century. Read more