Hamburg financed efficient stoves in Nigeria and India via Atmosfair to claim CO2 reductions. City bought certificates worth more than 1 million euros from 2018-2020. Claimed 75,000 tons CO2 reduction credited to climate account. Planned 12,000 stoves in Nigeria starting 2017 with Hamburg funds plus more in India. No trace of stoves found anywhere. Hamburg audit court exposed incredible negligence by authorities. Red-green senate celebrated project as sustainable aid halting Nigerian deforestation. Atmosfair responded opaquely to inquiries. Theory irrelevant – practice failed completely.