He is the author of "From Bauhaus to Eco-House: A History of Ecological Design" (Louisiana State University Press 2010), which explores the intersection of architecture and ecological science, and "Imperial Ecology: Environmental Order in the British Empire, 1895-1945" (Harvard University Press, 2001), which investigates how the promising new science of ecology flourished in the British Empire. His upcoming book, "The Power of The Periphery", will be released in 2020. This interdisciplinary piece explores the history of environmental sciences in Norway from the publishing of Rachel Carson’s "Silent Spring" until the Rio Conference in 1992.