I thought I'd combine a couple lists that only have a couple of relevant items.
- The Sun and the Moon: The Remarkable True Account of Hoaxers, Showmen, Dueling Journalists, and Lunar Man-Bats in Nineteenth-Century New York by Matthew Goodman
- The Bizarre and Incredible World of Plants by Wolfgang Stuppy
- Flow: The Cultural Story of Menstruation by Elissa Stein and Susan Kim
- Planet Ape by Desmond Morris with Steve Parker
- Fordlandia: The Rise and Fall of Henry Ford's Forgotten Jungle City by Greg Grandin
- The Age of Wonder: How the Romantic Generation Discovered the Beauty and Terror of Science by Richard Holmes
- Strength in What Remain by Tracy Kidder
BTW, I'm running out of lists so if you know of any "best book of the year" lists for 2009 that I haven't covered yet, please let me know.