Conservationists and ranchers restored habitat along the U.S.-Mexico border using porous rock structures but fear a solid border wall could undo work.
The Republic | azcentral.com, Phoenix Arizona Republic: Politics
Thu, 11/23/2017 - 6:00am
Conservationists and ranchers restored habitat along the U.S.-Mexico border using porous rock structures but fear a solid border wall could undo work.