For the past 20 years of their lives together, a Brazilian photojournalist and his wife have transformed a 1,750-acre parcel of land from a barren, heavily deforested landscape, into a tree-filled lush rainforest that is now home to hundreds of species of plants and animals. After returning home to Brazil’s Minas Gerais state in 1994 (about 70 miles inland from Brazil’s Atlantic coast), Sebastiao Salgado was appalled to see his family’s former cattle ranch desecrated to an unrecognizable level – a complete state of natural degradation, he later described it. “The land was as sick as I was – everything...