In a dry region of the southwestern United States and northern Mexico, a woman named Valer Clark, from New York City, has had a major influence on land and water preservation.
“There are four great geological forces: There's volcanism, plate tectonics, erosion — and there's Valer,” said Ron Pulliam, an ecologist formerly with the United States Department of the Interior and founder of nonporfit Borderlands Restoration Network. “Valer is one of the forces that has created the landscape around us here.”