Stephen has conducted evaluations of World Bank activities in environment and environment-adjacent sectors since 2009, including major evaluations on climate change mitigation and adaptation, small states, pollution abatement, and environmental sustainability; learning products on avian influenza response and pandemic preparedness, environmental and social risk management in policy lending,  and environmental policy lending, and a wide range of field and desk-based project evaluations.  He is the coordinator for World Bank project evaluation for sustainable development, infrastructure, and finance & markets.