Johannes Lehmann, Liberty Hyde Bailey professor of soil biogeochemistry and soil fertility management at Cornell University, received his graduate degrees in Soil Science at the University of Bayreuth, Germany. His research focuses on nano-scale investigations of soil organic matter, the biogeochemistry of pyrogenic carbon, sustainable soil management, climate change, biochar systems and the circular economy. Dr. Lehmann is a member of the steering group of the International Soil Carbon Network, has testified in the US congress, and briefed the President’s council of advisors. He authored more than 250 journal publications, has been named Highly-Cited Researcher by Thomson Reuter/Clarivate since 2014, is member of the U.S. National Academy of Sciences and German National Academy of Sciences (Leopoldina), of the board of the International Biochar Initiative, and Fellow of the Soil Science Society of America, he was named Humboldt Fellow at the Freie University Berlin and Hans-Fischer Senior Fellow of the Institute of Advanced Studies at the Technical University of Munich.