For his discovery the man was set free, and the largest pearl in the world began the journeys, or peregrinations, that would endow it with its name: La Peregrina.

WSJ: Pearls Gone Wild

WTO the World Trade Organisation, not the World Tourism Organisation, which was set up well before the free-traders pinched its initials.

ECONOMIST: AA (acronyms anonymous)

To become the world's best free-climber, as he had set out to be and as, in the 1970s and 1980s, he was, took years of training.

ECONOMIST: John Bachar, free-climber, died on July 5th, aged 52

Then they set those children free to capture their world and post the photos online.

CNN: Give a child a camera and save the world