Tending to a rambunctious garden

Think of the most natural, pristine place you've ever visited. You might envision a national forest or state park. These locales provide a landscape of solace, peace and quiet. We relate to these getaways as pure, real nature that's managed to stay untouched through centuries of human intervention. Now imagine your favorite hiking path or placid lake as a construction of wildlife: an outdoors reality based on someone else's idea of an anti-urban, off-the-beaten-path wilderness. On this episode of Field Notes, we explore nature conservation with environmental journalist Emma Marris. Marris' new book "Rambunctious Garden: Saving Nature in a Post-Wild World" is a tour of nature conservation and what's really wild in the world today.