Over the centuries, Japan has suffered from repeated outbreaks of diseases like smallpox, measles and cholera. Part 1 of "Japan vs. Epidemics" covered the history of epidemics up to the mid-19th century. In Part 2, we look at modern history, including outbreaks of cholera and Spanish flu. Our guest is historian Utsumi Takashi. He explains how Japan dealt with epidemics, and talks about several people who made important contributions to the evolution of the country's medical knowledge.

Japanese watches and clocks are respected around the world for their accuracy and durability. Many of them incorporate the latest technology. Our guest, Oda Ichiro, spent 26 years at a watchmaking company, and is now a university lecturer. He tells us the story of Japanese clockmaking, and introduces us to some clever and innovative timepieces. We also look at the incredible leaps in accuracy being made by cutting edge atomic clocks, and learn about the potential benefits of this technology.