A new study shows biochar to be far more effective at long-term carbon storage than previously thought. The study reveals critical flaws in the models used by the IPCC and European climate policymakers. A new study shows biochar to be far more effective at long-term carbon storage than previously thought. The study reveals critical flaws in the models used by the IPCC and European climate policymakers. Earth Sciences Environment Phys.org – latest science and technology news stories