Solar energy is one of the most contentious topics out there. Some see it as the way to a carbon-neutral energy system, while others say it’s a boondoggle. Varun Sivaram has worked in the ivory tower of academia, the nitty gritty of municipal governance, and the high-risk, high-reward world of tech start-ups. Along the way, he’s come face to face with the differing views of solar, and he attempts to pull them all together and put them in perspective in his new book, Taming the Sun.