Readers first phoned in about high milk and egg prices more than a year ago. Within months, as corn and wheat prices reached new daily highs, food was on everyone's mind. Shortages led to food riots in Haiti and a run on rice from Cambodia to Costco. So what went wrong? This series, Our Hungry Planet, found powerful and conflicting forces around the world influencing the supply and price of food. Some individuals and businesses have profited handsomely, while others went hungry and grocery bills continued to rise.