Guardian: Momentum is building to get some really tough action on the speculation pushing up food prices. At a conference today in London organised by the UK Food Group, Olivier De Schutter, the UN special rapporteur on the right to food, warned that a food crisis is inevitable unless we tighten up regulations on markets. “The problem with the current system is when there is one [bit of] bad news, such as wildfires in Russia… speculators bet on higher prices, which leads those holding the …