Generally my typical books have lots of twists and turns a big surprise ending and then usually another surprise at the end and ideally, as in Garden of Beasts, we get to the very end and we find at the last few pages that there's yet another surprise.
Scientists will eventually stop flailing around with solar power and focus their efforts on harnessing the only truly unlimited source of energy on the planet: stupidity. I predict that in the future, scientists will learn how to convert stupidity into clean fuel.