Mojzsis question

Consider the following: A rocky planet can act as a battery fueling the origins and the evolution of life by globally providing redox gradients from the flow of electrons from the mantle to the crust/atmosphere interface that can drive simple metabolic activity. In our discussion, I will use Earth and Mars as examples of different worlds to show time-dependent changes in this energetic flow, explain what controls their formation and temporal evolution, and discuss what our results imply for the origins of life on Earth, Mars and beyond — from a planetary perspective.