In this article, the authors talk about how important environmental public goods like watersheds and habitats are, but they're not always taken care of properly. They explain that since these goods are free for everyone to use, people might not contribute to their protection, which can lead to them being undervalued and not conserved enough. The researchers show how individuals decide how much to help out with these public goods compared to what would be best for society. They also discuss different types of environmental public goods, like ways to combat climate change or disease. The article points out that sometimes people acting in their own interests can lead to bad results for everyone.