 The Landsat-8 and Sentinel-2 satellites offer unique opportunities to monitor changes in landscapes over time. Both instruments have similar spectral capabilities but differ in their spatial resolution and coverage. When combining these two instruments, it is important to consider the differences in spectral and spatial characteristics. For example, the near-infrared bands of Sentinel-2 are more sensitive than those of Landsat-8, so combining them with older Landsat images may result in false positives. However, when used together, the two instruments provide a powerful tool for detecting changes in land cover and vegetation health. This article was authored by Emanuele Mandanesi and Gabrielle Bitelli.