Optical illusions are interesting visual phenomena that deceive the brain into seeing something differently from what is real. They happen when the eyes report to the brain information that does not ...

Waterfalls on land dazzle with their dramatic beauty, the world’s largest waterfall is hidden beneath the ocean. The Denmark Strait cataract, located between Iceland and Greenland, is a natural ...

NGM MAPS. Source: “spatial and temporal changes in cumulative human impacts on the world’s ocean,” Ben S. Halpern and others, Nature Communications; UNEP-WCMC, World Database on Protected ...