I met him while on opposing teams on the BBC's Only Connect show. Excellent chap. We beat his "QI Elves" team, (which then beat the team that beat us...).
I once went to a live podcast recording after having listened to the hosts for ~300hr without knowing what they looked like. It's hard to describe how uncanny it was. It was sort of like watching a movie with poorly dubbed dialogue.
The sunlit side of the earth is far too hot to inhabit in many places - the ‘Coldside’ is uninhabitable in just the opposite way. Life clings on in a narrow, sunlit ring - a kind of Goldilocks Zone
It's an interesting book, and a fun read. It's not hard sf, but he has done a good job of imagining plausible consequences for his one "what if". It's simultaneously a good read for the physical consequences (hot zone, water levels, food supply) but also political (fragility of democracy) and personal (navigating mysteries, distrust, zero-sum situations). He's a competent writer and this was a well-executed novel. (Surprisingly so given it was his first)
How could a stray planet(oid?) possibly affect the rotational momentum of the Earth enough to stop it from rotating entirely? That seems like the kind of physics gaffe that would give me a tyrescreech.wav end to my suspension of disbelief.
(Kind of like in Three Body where the sun is described as having a... crust? Which keeps the hot gases contained within it? And if punctured will spray a jet of solar plasma strong enough to cook planets out into space?)
> I also subscribe in a very self-interested way to the School of Disbelief Suspension, and hoping the reader will meet me halfway. I was trying to write a world where you can absolutely believe it, once you have accepted the enormous and unlikely sci-fi premise.