“We have given you, O Adam, no visage proper to yourself, nor endowment properly your own, in order that whatever place, whatever form, whatever gifts you may, with premeditation, select, these same you may have and possess through your own judgement and decision […] We have made you a creature neither of heaven nor of earth, neither mortal nor immortal as the free and proud shaper of your own being, fashion yourself in the form you may prefer.”
What do they have in common a battery, a tubercle or body fat? They are sistems of storing energy. The energy is stored for consumption when needed and to move autonomously. A crossing of the Pyrenees is an ideal situation to understand how and why energy is stored.
