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1. The welcome rise and worrying fall in covert investigation

   Covert techniques and specialist intelligence never appear to be far from the headlines - so why are they on the decline?

2. How monkeys make friends and influence each other

   For us humans, getting involved in an aggressive conflict can be costly, not only because of the risk of injury and stress, but also because it can damage precious social relationships between friends – and the same goes for monkeys and apes.