NIHR Clean Air Africa project (IMAGE) University of Liverpool Caption Woman cooking with biomass fuel in a traditional Kenyan ‘Chepkube’ stove Credit Nigel Bruce Usage Restrictions For use with this release only. Attribution required. License Original content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.