Future energy development is all about finding new, efficient ways to make and use energy. It means using sources of energy that are better for the environment than older ways of making energy. For example, people used to burn coal to make energy, but now they are trying to use renewable energy sources like wind and solar so that the air doesn't get polluted and we won't run out of energy. Scientists and engineers are looking for new ways to create energy that is better for the environment and will last for a long time.