The article discusses whether developing countries should take part in a program called the Clean Development Mechanism that allows them to earn money by reducing pollution for richer countries. It looks at how focusing only on easy fixes for pollution in these projects might leave developing countries with more expensive fixes later. The researchers consider different ways to measure pollution reduction – based on a set amount or in relation to production. They found that using a set amount for measuring pollution reduction can lead to more profits for the industry in developing countries. Additionally, if too many easy projects are done, the developing country may need more money as compensation.