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… over agricultural crops for bioenergy purposes instead of food production has been highlighted as a concern for food security. Competition over the use of land and water … around the world. At a time of rising fossil fuel and food prices, and ever-increasing international attention on …

… such as clean water, sanitation, energy, health care, food security and the protection of biodiversity...." … the world's population – is a "better life" meaning jobs, food, health services, housing (rural or urban), education, … ago), without the use of fire, had only the energy of the food he ate (2,000 kcal/day). • Hunting man (Europe about …

… and organic remains and waste from agriculture and food processing industry (corn silage, manure, slaughterhouse …