2. Energy
Energy is everywhere around us and yet we’re barely aware of its presence. The energy in a single gram of any kind of matter, reports Gerald Schroeder, can boil 34 billion grams of water into steam. We know that different forms of energy are converted into each other given a conversion mechanism. But where did energy, take, for instance, the energy fields in vacuums, come from? Martin Rees acknowledges that it is basically mysterious how empty space could have energy associated with it. And we know nothing about the origin of energy or the primal field.