Popular science, current affairs, climate and ecology, palaeontology, travel, ethics&hellip when a book defies (or straddles) this many genres, I have to imagine how the librarian would place it. (The bookseller would likely leave it at non-fiction.) So I am going with &lsquochronotravelogue&rsquo foremost, but noting the strong claims made by a science journalist&rsquos exploration of ethics (and not only of applied genetics) and the musings on human nature that, notably, often decentre humans while acknowledging our godlike status as movers and shakers in the contemporary world, our reach stretching across space and time in hindsight, mythic vision and futuristic fantasy&mdashand our clumsy clay.