Population studies estimate that there are only 150,000 to 200,000 of westland lowland gorillas left in the wild, with the species in rapid decline. That has earned them a Critically Endangered ranking from the IUCN, the organization that monitors the world’s endangered animal. Most western lowland gorillas live in equatorial Africa, the geographic area that includes countries like Congo, Gabon, Cameroon, the Central African Republic and Nigeria. In Nigeria’s Cross River State, one subspecies of lowland gorilla is even more imperiled—an isolated group of gorillas located about 200 miles north of the main population, which number less than 300. A new superhighway project slated for the area threatens to put them in even more precarious situation. Smithsonian article.