Fifteen beavers were released in the Arizona desert after the San Pedro River dried up: four years later, the big surprise arrived
Fifteen beavers have been reintroduced into the dry ecosystem of the San Pedro River in Arizona as part of an ecological restoration project, yielding surprising results four years later.
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.