| The Global History of Organic Farming Gregory A. Barton, Environmental historian, Western Sydney University and the University of Johannesburg Gregory A. Barton is a noted historian of British, world, and environmental history. He is Professor of History at Western Sydney University and the University of Johannesburg, and is the author of Empire Forestry and the Origins of Environmentalism, Lord Palmeston and the Empire of Trade, and Informal Empire and the Rise of One World Culture. |