Since 1994, the Malpai Borderlands Group, a coalition of ranchers, has worked to steward approximately 800,000 acres of rangeland in southern Arizona and New Mexico. The group started with the idea that if its members — ranchers from multiple generations who worked the land — could come together to manage...

President Trump has requested prototypes for what he calls a “physically imposing” and “beautiful” border wall. This week in a meeting with congressional leaders he floated the idea of covering it in solar panels. That’s not a new concept.