Proms to mark the end of primary school are the latest pre-teen craze. And they're growing, not just in numbers, but in glitz. Pre-teen Proms tells the story of the children at two schools in the three months running up to this latest, inescapable, rite of passage. At Riverside Primary in Livingston, the teachers love the fun and glamour of the prom, while at well-heeled Mearns Primary just outside Glasgow, they're fighting to keep the 40-year-old Scottish tradition of their leavers dance alive. But as the kids demands mount - pamper parties, horse drawn carriages, limos, maseratis, red carpets and non-alcoholic cocktails, not to mention prizes for prom king, prom queen and couple most likely to get married - the parents have little choice but to stump up the cash. So once the kids have had their say, how different will the dances really be? Who wins - the adults or the 11-year-old kids?

Horizon reveals the latest research into one of the most mysterious and common human experiences - pain.

Breakthroughs have come from studying a remarkable woman in London who has felt no pain at all in her life, a man in the US who cut off his own arm to survive, and three generations of an Italian family who don't feel extremes of temperature.

We witness a new treatment that involves a pioneering computer game 'snow world' that contains the power to banish pain.

And we find how powerfully our moods and emotions shape what pain we feel.

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