The world only eats a little more than half the food it grows. The rest is fed to animals, makes fuel, is lost in the supply chain or wasted by consumers.
Here is the rough breakdown in per capita terms.
Animal feed: 88 kg (194 lbs)Biofuel production: 15 kg (33 lbs)Supply losses: 139 kg (305 lbs)Consumer waste: 52 kg (114 lbs)Consumption: 375 kg (825 lbs)
As I mentioned in the intro food has a huge environmental footprint: 24% of greenhouse gas emissions, 40% of land use, 70% of water use and 75% of deforestation. Even more disturbing is the reality that the world produces enough calories to feed 14 billion people, but 800 million remain hungry. While this is a complex issue, food waste contributes to this problem.