The document discusses various tools for assessing the environmental impacts of products and services, including life cycle assessment (LCA). It provides an overview of LCA methodology and describes its strengths and weaknesses. It also gives an example of how a civil society organization used LCA results in a campaign that influenced Swedish tomato producers to switch to biofuels in their greenhouses. Environmental input-output analysis is also introduced as a tool to study relationships between economic sectors and their environmental impacts.