Fifteen beavers were released in the Arizona desert: four years later came the big surprise
An ecological restoration experiment in Arizona's San Pedro River found that reintroducing beavers greatly benefited the local ecosystem.
Giant tortoises return to Galápagos island after 150 years
Over 150 giant tortoises have been reintroduced to Floreana Island in the Galápagos archipelago, marking a significant step in ecosystem restoration after their extinction over a century ago.