evidence: James Galloway, the Sidman P. Poole Professor of Environmental Sciences at UVA, investigates how people use resources like food and energy. He also studies the benefits and problems those resources create, like the downstream effects of fertilizers and the hidden costs of the massive amounts of energy we use to heat and cool our homes. [...] For Galloway, the book endures because it was one of the first books to illuminate the broader impact of environmental change on humans, energizing a generation of readers. [...] Today, Lerdau is a biologist interested in how plants affect the world around them – how the compounds they emit change the environment around them and how, on a larger scale, that environmental affects the atmosphere of the earth. The concept of thinking about science on a global scale wasn’t new when Silent Spring was published, but Lerdau credits the space program for making the environment a matter of central importance to scientists today.