Global food prices aren't leaving any wiggle room for bad harvests or demand spikes. The state of play: A UN index of food prices "has reached its highest since September 2011, climbing almost 5% last month," reports Bloomberg. Why it matters: The real threat comes in countries where large portions of the population live close to the edge of hunger, Axios' Bryan Walsh wrote. Even in the U.S., rising prices hit the poorest Americans, who spend more than one-third of their income on food. "The pain could be particularly pronounced in some of the poorest import-dependent nations," Bloomberg reports.