Clegg’s huge backlist of popular science covers everything from quantum entanglement to climate change. He has yet to write a break-out book. Nor will he, I suspect: he’s one of that curiously egoless cohort of excellent writers — Philip Ball and Oliver Morton also spring to mind — who quietly, steadily, run rings around their flashier peers. Like them, Clegg doesn’t make science delightful. He delights in science.