Lasky's picture-book sketch of naturalist's John Muir focuses on Muir's special love of California's snowy Sierras and Yosemite Valley and his successes in founding Yosemite National Park and the Sierra Club.

In celebration of the fiftieth anniversary of the publication of Silent Spring, here is a biography of Rachel Carson, the pioneering environmentalist. She wrote Silent Spring to wake people up to the harmful impact humans were having on our planet.