In Crisis of the Wasteful Nation (University of Chicago Press), Ian Tyrrell gives us a cohesive picture of Roosevelt’s engagement with the natural world along with a compelling portrait of how Americans used, wasted, and worried about natural resources in a time of burgeoning empire. Countering traditional narratives that cast conservation as a purely domestic issue, Tyrrell shows that the movement had global significance, playing a key role in domestic security and in defining American interests around the world.