Their huge ears locate the underground crawling sounds of beetles, larvae, and other insects in the sands of the Kalahari desert. But their resemblance to the thieving jackal lead to their inadvertent targeting by farmers defending their livestock. With their numbers dwindling, the bat-eared foxes of southern Namibia have become the passion project of veterinarian Margit Du Toit.

While it has been debated for many years, new evidence might finally put one debate to rest: Marco Polo has gone to China. Explore the mysteries of the historical figure in this documentary.