Once native prairie covered almost 40 percent of the United States, but today it is one of the most endangered ecosystems in the world. Plant a Pocket of Prairie teaches children how changes in one part of the system affect every other part: when prairie plants are destroyed, the animals who eat those plants and live on or around them are harmed as well. Root shows what happens when we work to restore the prairies, encouraging readers to "plant a pocket of prairie" in their own backyards.