To me, it seems that a third trend in 2012 nonfiction titles is a focus on Environmental and Natural History titles.
I have absolutely nothing against Environmental titles; many of them have been written by some of my favorite authors (Rachel Carson and Wendell Berry, I'm looking at you). All the same, I can't say that there is anything in the spreadsheet (under Environmental writing) or on this list that I really, really must read any time soon. Although Richard Fortey's Horseshoe Crabs and Velvet Worms: The Story of the Animals and Plants that Time Left Behind does sound kind of interesting.
So there's my ideas about 2012 nonfiction trends: politics, comforting history and historical biography, and environmental titles. If you'd like to see a PDF version of the talk I gave, here it is (or you can click on the Nonfiction Trends 2012 (OWLS) link at the right).
What I want to know is: do you agree with these trends? Have you been noticing any nonfiction trends? (I also think that there's fewer memoirs coming out this year, although I think they'll continue to be popular with readers.) Any trends that you'd LIKE to see?