Landslides are a widespread and often underestimated natural hazard, causing thousands of deaths and significant economic damage each year. They routinely block roads, destroy infrastructure, and disrupt communities. Intense or prolonged rainfall is the most common landslide trigger, but earthquakes and human activities can also cause them. Using satellite data, models, and citizen science reports, NASA researchers have developed a collection of tools and datasets to improve our understanding of landslides and help communities around the world monitor, predict, and respond to these destructive events.