My first exotic field production, All the Salt in China was shot in China around 2000 on the elusive subject of iodine deficiency. Micronutrient and vitamin deficiencies are always a tough sell but this is among the work that the UN does best. If people could be made aware of how much the UN and its partners have improved basic health indicators around the world, they’d be impressed. The challenge with this sort of subject is to tell a story in a way that gives something relatively invisible emotional resonance. I think All the Salt in China accomplishes this, with some help from our star, Ray Yip.