What makes us human? Are we the only animals, that have feelings of love, anger, and grief? In this BBC video, a robotic monkey is accepted by a troop of langur monkeys as one of their own. Then, something extraordinary happens: it falls, and is taken for

What makes us human? Are we the only animals, that have feelings of love, anger, and grief? In this BBC video, a robotic monkey is accepted by a troop of langur monkeys as one of their own. Then, something extraordinary happens: it falls, and is taken for