Because I think the power may be out, but what is not up to the heat of the sun as a natural heat from underground hot springs. For use in the production of energy to be able to sustain human life, are not.
Because I think in the future, power may be gone, but not to heat energy from nature such as the Sun. Hot springs. Heat waves from underground to use in energy production, cheese-can man.
because I think that in the future may be out, but what power is not all that is to power the heat from the sun such as natural hot spring wave of heat from the ground to use in the production of energy for human existence is centerd around.