> What I find more interesting is that today, all our energy ultimately can be traced back to stars, even if sometimes extremely indirectly (e.g. in the case of

> What I find more interesting is that today, all our energy ultimately can be traced back to stars, even if sometimes extremely indirectly (e.g. in the case of fossil fuels or nuclear fission). But this could actually change -- if nuclear fusion becomes used in practice. Wow, that's a cool thought. In an attempt to continue, even human-made fusion energy is an extremely indirect output of the sun. Photosynthesis, animals, evolution, human history, and even fossil fuels enable the right conditions for more fusion energy. The system understands itself well enough to recreate its most massive and awesome force in miniature.