Overview: From volcanic eruptions to torrential rain, Japan is one of the world's most disaster-prone countries. Earthquakes, too, are common. To ensure people are ready to look after themselves and their communities, Japan spends more time and energy on being prepared for earthquakes than any other country. Our expert guest this time is Minoru Watanabe, a journalist who covers disaster preparedness and risk management. And in Plus One, how to put together an emergency bag.