Unlike those who believe that money is a wealth, unless it is only a means of having it, energy is the essential basis of our economy. Indeed we can remember the technological revolutions, as the taming of fire and animal, then the energy provided by the sun and water, then fossil energies, finally the evolution towards the science of isotopes, nuclear energy, which constitutes material.
Why energy ?
Every energies are natural, and that nature also contains the whole universe, which we (...)