Deforestation can be monitored from space using Earth observation satellites. For this interactive, an algorithm analyzed data collected by Landsat 5 and 7 between 1988 and 2017. Patches of logging can be visualized by tracking spikes in vegetation indicators on Prince of Wales Island over time. on a logged patch below to find out when it was logged and how much forest was logged. Adjust the slider on the right to view the progression of logging since 1987.