Kip the cave boy and Paleowolf each face hunger and danger on a journey in Paleolithic times; when they decide to join forces and help one another, Paleowolf becomes the first dog.
An environmental history of the Nashua River, from its discovery by Indians through the polluting years of the Industrial Revolution to the ambitious clean-up that revitalized it.
Life in the Sonoran Desert is captured by the description of a family whose lives are interwoven with the environment, and the home they fashion from earth.