The black rhino is nature's tank, feared by all animals. Even lions will break off a hunt to detour around one. And yet the black rhino is on the edge of extinction, its numbers dwindling from 100,000 at the turn of the century, to less than 2,500 today. The reason is that in places like Yemen, China, Korea, Taiwan, and Thailand, the rhino's horn is more valuable than gold, so valuable that people will risk their lives to harvest it. To deter rhino poachers, African governments have spent millions--on helicopters, paramilitary operations, fences and guard dogs, even relocation to protected areas. Finally, Namibia decided to de-horn its rhino population, in a last ditch effort to stop the slaughter. In 1991, Carol Cunningham and Joel Berger, and their eighteen-month-old daughter Sonja, went to Namibia to weigh the effects of de-horning on rhinos. InHorn of Darkness, they tell the story of three years in the Namib Desert, studying Africa's last sizable population of free-roaming black rhinos. This is the closest most readers will come to experiencing life in the remaining wilds of Africa. Cunningham and Berger, writing nate chapters, capture what it is like to leave the comforts of civilization, to camp for months at a time in a land filled with deadly predators, to study an animal that is reclusive, unpredictable, and highly dangerous. The authors describe staking out water holes in the dead of the night, creeping to within twenty-seven meters of rhinos to photograph them, all the while keeping a lookout for hyenas, elephants, and lions. They recount many heart-pounding escapes--one rhino forces Carol Cunningham up a tree, an unseen lion in hot pursuit of hyenas races right past a frozen Joel Berger--and capture the adrenaline rush of inching closer to a rhino that might flee--or charge--at any moment. They also give readers a clear sense of the careful, patient work involved in studying animals, the frustration of long days without finding rhinos orl“±