Land is transitioning from agriculture and forestry. Crops for food are competing with crops for fuel. Climate change is increasing stress from fragmentation and invasive species. As monitoring land change grows more urgent, single-purpose observations working in synergy are demonstrating great value-added. Aerial photography is being combined with field and satellite data. Landsat and other remotely sensed data are jointly evaluating sensitive land conditions. Shared science ranges from monitoring locusts to assessing crops and estimating food security. By bringing collaborative initiatives to affected people and regions, GEOSS encourages better land management and the development of sustainable practices.