Can you steer a hurricane? In this week's weather-focused Naked Scientists, we find out how aeroplanes are creating clouds, get the low-down on how insurance companies size up storm risks and hear how a hurricane works and whether it's possible to control its course. Also, news of how the Asian monsoon sends pollutants skyward, the world's smallest desalination system, why swine flu spared the older generation and where your coronary arteries came from. Plus, in a weather-related Kitchen Science, we explore the workings of a rainbow.