A story of hope, love, and unspeakable death in a disappearing Brazilian rainforest. A team of dogged conservationists tries to save a beautiful monkey species, the golden lion tamarin, from certain extinction by reinforcing their numbers with tamarins born in zoos. Will these immigrants learn to find enough to eat, find secure places to sleep, avoid predators, and survive attacks by wild tamarins? Will they find mates and make babies? The technique, known as reintroduction, is new, and the conservationists struggle to find the best method. Can they train the tamarins in zoos to meet the...