This $177,268 project grant from the National Science Foundation's Division of Environmental Biology, under the Biological Sciences federal grant program (CFDA 47.074), will fund research at Washington State University from January 2023 through December 2025. The research aims to better understand the role of trees in the global water and methane cycles by simultaneously measuring radon, methane, and water fluxes across a wetland-upland gradient. Field data will be used to develop numerical models simulating dynamic gas transport through the soil-plant-atmosphere continuum. Additionally, around 200 second-grade students from underrepresented groups will participate in hands-on science activities at American University focused on watersheds, trees, and sustainability. This award supports the program's goal of promoting biological sciences research to strengthen the nation's scientific enterprise and increase understanding of major problems.