The article discusses how looking at the environmental impact of products or services sometimes clashes. They say it's crucial to consider both global and local impacts when dealing with the environment. By using both life cycle assessment (LCA) and quantitative risk assessment (QRA), they can cover all bases. The researchers studied various ways to mix LCA and QRA and found that no single method works best. Depending on the situation, different methods have their own strengths and weaknesses. Essentially, combining LCA and QRA helps get a clearer picture of the environmental impact of things we use every day.