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Today we known that solar energy can be stored as edible biomass by photosynthesis, but 10,000 years ago this assumption was unthinkable. However, the Neolithic man could developed agriculture, based on plant germination observations. Nowadays, the systems used for food production are practically the same (Koning et al., 2008). But for neolitican man, the empirical observation of germination processes and biological cycles of certain species ended in the discovery of agriculture.

Even our agriculture is still the same, the climate scenario is changing. Our current carbonbased economy has caused massive greenhouse emissions, and consequences are global warming and the depletion of the ozone layer. The biological, economical and social impact on the environment is significant. Water scarcity and natural catastrophes (tsunamis, earthquakes, floods and erosion) damage cultivable land, reducing local food availability (Francket al., 2011, IPCC, 2007).