Airships: I'm fascinated by lighter than air technology
Most books that I write about are about economics and technology but I have to write about what I'm reading right now since I'm involved in a project in aviation.
Right now I'm reading "Transatlantic airships an illustrated history" by John Christopher. The story of airships and lighter than air technology is fascinating.
If you want a beautiful panoramic coffee table book, you should check out Max Pinucci's "AIRSHIPS".
http://www.airships.net/blog/beautiful-book-airships-designed-greatness/
The excellent podcast 99% Invisible has made good podcast about the history of airships and the "future that never was" Check it out: https://99percentinvisible.org/episode/airships-future-never/