The introduction of Charter Cities in the developing world could offer several benefits. In this piece, Brandon Fuller and I explore how such new cities will help individuals to protect themselves from new climate risks. In LDC cities today, IBM is selling “Command Centers” to urban mayors to help them track real time risks. In this other piece, I argue that localized Twitter searches are a more cost effective approach to aggregating and sharing information than IBM’s expensive “command and control” system. On the topic of coping with heat waves, Richard Green celebrates good design in India.