Quinault rainforest, Olympic National Park, Washington state (© Chris Moore/Tandem Stills + Motion)

June 22 is World Rainforest Day, a global moment and a year-round call to protect the world's remaining rainforests. These ecosystems aren't just dots on the map. They thrive across the tropics and beyond yet cover only about 6% of Earth's surface. Think of the Amazon in South America, the Congo Basin in Africa, and the forests of Southeast Asia.