Arrived in San Francisco this evening for the annual conference of the Society for Prevention Research. I'll be blogging my conference diary here. Spent the flight over from the UK doing some writing, and watched a documentary - Dust Bowl, on the depression and drought that hit the Mid West of the USA in the 1930s. A powerful account of how desperate life became for people, and the resilience of both the families who stayed to try and make a living in what had become a desert, and those who left for other parts of the country.