After decades of progress, the number of people without enough to eat is actually increasing, and food price spikes are a big part of the problem. That's because, when you spend up to 75% of your weekly income on food - as many poor families are forced to do - sudden rises have an especially destructive effect.
Price spikes have many causes - the changing climate, oil prices, dysfunctional commodities markets, biofuels policies that mean crops end up in cars and not on plates - but what's clear is that we are facing a whole new challenge. We're calling on governments to work together to deal with food price crises effectively - and to tackle the problems that mean millions of people can't afford enough to eat.