US Congressional Hearing
Dr. K.C. Das (University of Georgia) testifies in Congressional Hearing May 21, 2009: Dr. KC Das was invited as witness before the US House Committee on Small Business; Hearing on the impacts of outstanding regulatory policy on small biofuels producers and family farmers including biochar carbon sequestration.

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Dr. Johannes Lehmann testify at he US House of Representatives June 18, 2009: The hearing, entitled "Global Warming’s Growing Concerns: Impacts on Agriculture and Forestry”
Dr. Lehmann provided scientific information about biochar carbon sequestration for sustainable climate change mitigation and global soil enhancement.