- The European Miracle: Environments, Economies and Geopolitics in the History of Europe and Asia
- New Hampshire Curiosities: Quirky Characters, Roadside Oddities & Other Offbeat Stuff (Curiosities Series)
- Iowa Curiosities: Quirky Characters, Roadside Oddities & Other Offbeat Stuff
- Mark Zuckerberg: A Biography of the Facebook Billionaire
- The world of water (Approaches to environmental studies)