Never give up: undulatus asperatus

For years, Gavin Pretor-Pinney, the founder of The Cloud Appreciation Society, sought recognition for a new category of cloud called the “undulatus asperatus.” People around the world had been sending him pictures cloud formations, but they had no official name. Nine years later, the World Meteorological Organization finally recognized the clouds in the updated version of the International Cloud Atlas, the first new addition in over half a century.