Portocolom AV | One out of every three pieces of food ends up in the rubbish bin, which is equivalent to around 1.3 billion tonnes of food. That is enough to feed all the undernourished people in the world several times over. In Spain, each person throws away 77 kilos of food a year, 42% of which is generated in households. But food waste is not only a social or humanitarian concern, but also an environmental one. When we waste food, we also waste all the energy and water it takes to grow it, harvest it, transport it. And if the food ends up in landfill and rots, it produces methane, a greenhouse gas even more potent than carbon dioxide.