Milan, November 29 - Humans will need three Earth-sized planets in order to keep up current eating habits by the year 2050, according to the Barilla Center for Food and Nutrition on Thursday. The data emerged at the center's fourth international forum. Researchers said that according to human consumption habits, which include throwing away 1.3 billion tons of food every year, the planet is on pace to run out of food in coming decades. According to estimates, the planet's population is scheduled to grow to nine billion people by 2050. With that it will require increasing food output by 70%, while currently natural resources are dwindling.