Walter Jehne is an internationally known Australian soil microbiologist and climate scientist and the founder of Healthy Soils Australia. He is passionate about educating farmers, policymakers and others about “the soil carbon sponge” and its crucial role in reversing and mitigating climate change. His work shows how we can safely cool the climate by repairing our disrupted hydrological cycles. That project requires us to return some of the excess carbon in the atmosphere to the soil, where it belongs. In 2017, he participated in an invitation-only United Nations Food and Agriculture Organization conference in Paris aimed at bringing soil into the next Intergovernmental Panel on Climate Change (IPCC) report.