In the stifling heat of Surakarta, a group of dancers dance for 24 hours. It is World Dance Day, 29 April 2011.

"DANCING is just discovery, discovery, discovery", Martha Graham said. If today dance is important, particularly as expression, this is because of a discovery often dismissed as mundane: we rediscover the body, and with it, we discover freedom.

Pre-schoolers have long shown this: they move spontaneously to musical rhythms, tapping or ha