My work focuses on developing methods within the field of Industrial Ecology. In particular, I develop and use life-cycle based scenario models, drawing on methods such as Life Cycle Assessment, Input-Output Analysis and Material Flow Analysis. These models provide insight in environmental trade-offs, co-benefits and problem shifting related to climate change mitigation policies and policies aimed at circular and sustainable transitions). At NILU, I have been task leader for various tasks in the European Topic Centres on Air Pollution, Noise, Transport and Industrial Pollution (ETC/ATNI) and Climate Change Mitigation and Energy (ETC/CME) for the European Environment Agency, working among others on methodologies for assessing the benefits and trade-offs of renewable energy sources in the European energy system, decomposition analysis of emissions trends, and emissions outsourcing in global trade. In addition, I lead a Work Package on risk-benefit assessment of engineered nanomaterials in the Horizon 2020 funded European research project RiskGONE, work on the life cycle impacts of plastic recycling scenarios in the nationally funded project Plastcycle, and I am NILUs principal investigator in the nationally funded Centre for Science-Based Innovation (SFI) earthresQue.