International Union for Conservation of Nature (IUCN)

Built World

Tracking 172,620 species through Red List assessments

Cranes returned to Scotland in 2012 for the first time in 500 years; wolves number over 21,500 in Europe, up 58% in a decade; green sea turtles dropped from endangered to least concern. Across the continent, species once written off are staging comebacks.

Updated May 20