It wouldn’t be fair to say that Bernanke is responsible for all the run-up in global food prices. There are many factors at play. That’s not to say the US monetary policy doesn’t have a central role in the global commodities market. The Fed has a big axe. Policies like ZIRP and QE encourage speculation. It's contributing to overheating in a number of countries, this is adding to demand at every level. How much can

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