There's more to mankind than mere monkey business

What did a 184kg gorilla do when he escaped his London zoo enclosure? The silverback guzzled 5l of undiluted blackcurrant squash before being sedated and put back in his cell. It might be behaviour worthy of an unruly toddler, but primates fascinate us. Another of our evolutionary forebears, an orang-utan, stole the headlines this week after being snapped hunting for figs in the jungle of Borneo.