Science describes energy as the ability to do stuff. Move stuff. Change stuff. Transform stuff. Heat. Light. Motion. Gravity pulls down. Steam engines chug-chug forward. There is potential, or stored, energy. But also kinetic, or working, energy. Converted energy, too. Renewable and non-renewable; primary or secondary. Science has its fingers all over our energy explanations. But how much do we actually know about the origins of the energy of life? Where’s the generator that started this whole she-bang? And what about black holes? When does string theory run out of… string? Explain it to me like I’m five...