Darwin Comes to Town examines the action of evolution on urban organisms — the mosquitos of the London Underground, blackbirds worldwide, white-footed mice in LA, bobcats in Hollywood… Is evolution happening because of human cities, and if it is, how does it work? It’s full of examples showing that there is clearly selection at work in the urban environment (a fact nobody should be surprised by), along with an in-depth discussion of one of the classics, Biston betularia, the peppered moth. (If you don’t know that example, basically in areas near industry, a melanic [black] form of the moth began to thrive, and became the dominant form in such areas. Since industry’s impact on the environment has been ameliorated now, things have quickly gone back the other day.)
I found it a fascinating book, though I think it could have been better organised — I have no idea how to find any of the information again, because I can’t recall any clear sections. There’s a lot of good anecdotes, and reference to studies I want to look up, but it is a tad conversational — and prone to falling into reminisence and flavour text about locations.