David Attenborough's entertaining romp through the world of monkeys has a serious side: for when we look at monkeys we can see ourselves. From memory to morality, from 'crying wolf' to politics, monkeys are our basic blueprint.
Pygmy marmosets 'farm' tree sap; bearded capuchins in Brazil develop a production line for extracting palm nuts; white-faced capuchins in Costa Rica tenderly nurse the victims of battle; and in the Ethiopian highlands a deposed gelada baboon has got the blues.
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