Oklahoma reintroduced bison to tallgrass prairie in 1993: Decades later, the herd has restored the native grassland ecosystem – AS USA A third of the United States was once covered with prairies, today just a fraction remains but with the help of bison the vibrant ecosystem is returning. — Read on en.as.com/latest_news/oklahoma-reintroduced-bison-to-tallgrass-prairie-in-1993-decades-later-the-herd-has-restored-the-native-grassland-ecosystem-f202609-n/ http://nedhamsonsecondlineviewofthenews.com/2026/09/22/oklahoma-reintroduced-bison-to-tallgrass-prairie-in-1993-decades-later-the-herd-has-restored-the-native-grassland-ecosystem-as-usa/