How clean is green energy?

In this week's episode we talk about the waste heat effect of using energy, and how ultimately we may need to at least reconsider what energy sources we plan to use in the future. We also discuss a recent scientific breakthrough, nerve cells can now be repaired in a matter of weeks. How does this work? How does it differ from past operations? What does this mean for the future of medicine? Is this breakthrough a false glimmer of hope, can paralysed people really recover? All these questions and more will be answered in this week's podcast.