Johannes Lehmann Author & Editor

Johannes Lehmann is professor of soil biogeochemistry and soil fertility management at Cornell University, USA, Co-founder and Chair of the Board of the International Biochar Initiative, member of the U.S. Departments of Agriculture and Energy Biomass R&D committee and editor-in-chief of Nutrient Cycling in Agroecosystems

Stephen Joseph is a visiting professor in the School of Materials Science and Engineering at the University of New South Wales, Australia, and Co-founder of the International Biochar Initiative.