This is the first book to document the origins and early history of environmentalism, concentrating especially on its hitherto unexplained colonial and global aspects. It highlights the significance of Utopian, physiocratic and medical thinking in the history of environmental ideas. The book shows how the new critique of the colonial impact on the environment depended on the emergence of a coterie of professional scientists, especially in the Dutch, French and English maritime empires. The prime importance of the oceanic island 'Eden' as a vehicle for new conceptions of nature is emphasised, and the significance of colonial island environments in stimulating conservationist notions is underlined, revealing how, for the first time, the limitability of local and global resources could be recognised.