The Natural Heritage of Illinois is an engaging collection of ninety-three essays on the lands, waters, plants, and animals found in Illinois. Written in lively, accessible prose, the book discusses how wind, water, glaciers, earthquakes, fire, and people have shaped Illinois' landforms, natural habitats, rivers and streams, and the ways in which native plants and animals, from individual species to entire ecosystems, have thrived, survived, or died out.

Author John E. Schwegman looks at the state's early natural history, including its prehistoric vegetation and wildlife....