"The price of today’s food is not its true cost. It passes on its massive environmental, health and social costs to future generations. Despite deferring these costs, farming that relies on fossil fuels means rising food prices and its depletion of soils means decreasing abundance. The manpower efficiency of a single farmer presiding over thousands of acres of monocultures hides its huge energy inefficiency. The combination of fertilisers, sprays and machinery means that roughly 10 to 15 calories of fossil fuel energy are used to create 1 calorie of food in the US. "