science 🗺️ Global map reveals Earth's sand dune distribution
A researcher created a complete digital map detailing Earth’s wind-blown sand dunes. Dr. Andrew Gunn, from Monash University, mapped these dunes globally using satellite imagery and elevation data. The study identified dunes on approximately 7.8% of the Earth's surface across all continents. Gunn found that sand accumulation, not just aridity, drives dune formation, which is key for climate analysis. This dataset will help predict desertification and study landscapes on other planets. 🌍