The article looks at ways to cut greenhouse gas emissions from US farming. They studied different policies to reduce certain emissions in crops that can't be easily seen. By using a mix of scientific and economic tools, they figured out that policies focusing on things we can see, like crop types or usage of fertilizers, can help lower these emissions. This type of policy could be as effective as directly taxing the hidden emissions, but with less impact on farm profits. This research shows that there are ways to reduce emissions from agriculture without hurting farm incomes, even if we can't see all the pollution happening.