The earthquake, tsunami, and the ensuing crisis in Japan have created social, political, and financial jitters all around the world. But the Japanese themselves are behaving in a more composed matter than many others. We talk to two Japanese living in Hong Kong about how they are prepared for such incidents. Despite the panic buying of salt this week, about 85% of the salt on sale in Hong Kong's markets contains no iodine. Even for the salt that does contain iodine you'd require 80 tablespoons to give you the same amount of iodine as one radiation-blocking tablet. There's been a lot of frankly idiotic rumour going around about both the crisis at Japan's nuclear plants and the perils of radiation. In our studio to shed some light, we hope, is Professor Alexis Lau of the University of Science and Technology. In crises like the one facing Japan the traditional news media is a double-edged sword. It can draw attention. It can help. But journalists can get in the way. And social media have revealed they can do as much harm as good. They allow people to share information and express their concern and empathy, but for others they become platforms for prejudice and misinformation. Locally, fishing has been a part of the Hong Kong scene for centuries. But now overfishing is a concern, local waters are getting depleted, the seabeds are damaged, and, if a government proposal goes ahead, Hong Kong's trawler fishermen may have to find new ways to make a living.