The document discusses assessments of soil health at large scales for evidence-based decision making. It describes the Land Degradation Surveillance Framework (LDSF), which uses spatially stratified random sampling and a hierarchical structure to assess soil health across a global network of sentinel sites. Earth observation data from satellites can provide information on soil properties and sensitivity to degradation. Assessments need quantifiable metrics that allow for hypothesis testing and be at scales relevant to farmers. They should also integrate social and ecological indicators to understand interactions between systems and resilience.