Researchers say they have once again seen an elusive jaguar in southern Arizona, as environmentalists contend a federal border wall and copper mining threaten the animal’s historical habitat.

Part of the state’s $230 million Rebuild by Design project entails Jersey City granting easements to Hoboken along Grove Street, Marin Boulevard and Jersey Avenue to build a flood wall.

Twin announcements Tuesday could bring welcome relief to the ongoing pollution crisis at the U.S.-Mexico border in the Tijuana River Valley.