The Last Giants satisfies British explorer Levison Wood's lifelong desire to learn more about the majestic African elephant. These giants trek through some of Africa’s most magnificent landscapes as they go in search of life-giving waters and pastures. El Nino’s droughts and an insatiable ivory trade have cut African elephant numbers by a third in the last decade alone, and if elephants disappear entirely, Africa’s entire ecosystem could collapse. But Botswana has become a safe haven,...