In your latest book, The Great Transition, you discussed how we are starting our transition out of fossil fuel. Which technology you see trending right now and which have the highest hope of success? Well, maybe the most exciting thing right now is the growing use of solar energy. Growing by 30% per year worldwide. The principal reason for that is the cost of solar panels has been decreasing, and now you can get cheaper electricity from a solar panel sitting on the roof. So it is an interesting situation because as more and more people put these panels on their rooftops, the market for utility continues to shrink, but it still has to maintain the same infrastructure. So it has to raise electricity prices, and the more it raises prices the more people put panels on...