From John Muir pushing a president and a nation into setting aside vast preserves—including Yosemite, Sequoia, Mt. Rainer, and the Grand Canyon—to Julia “Butterfly” Hill saving a 1,000-year-old redwood while bringing to light the devastation of our old-growth forests, chronicles the efforts of the men and women who dedicated their lives to protecting the United States’ natural heritage. Other notable profiles include John James Audubon, who introduced the study of birds to North America; Marjory Stoneman Douglas, who worked to conserve the Florida Everglades; and Rachel Carson, who opened the world’s eyes to the dangers of pesticides. Together, these environmentalists’ inspiring life stories tell the history of American environmentalism, from its inception to the present day. In this comprehensive resource, children also learn how to put their concerns into action. Step-by-step instructions on how to build a birdfeeder, conduct a water quality survey, start a compost pile, create their own recycled paper, and test for acid rain are included, as well as a time line of historic milestones and a list of popular parks and sites to visit or explore online.