Biology, mathematics, and chemistry, were like playing for me-- physics, however, was a big stretch. I barely passed exams on vectors, forces, and electric currents in my college physics class. Years later, I toured a physics research lab in Colorado where they were trying to create artificial photosynthesis using a solid gold aspen leaf attached to a couple of wires. I thought the physics guys were crazy attempting to duplicate the process that powers life on Earth when green plants do it ...