It takes more than physical engineering for Japan's rail stations to carry out the smooth transport of some 13 billion passenger trips each year. 

Rail station design is a master class in "Nudge Theory" at work, perhaps most notably through the use of strategically placed blue LED light panels along station platforms. 

What might look like a bug zapper is actually a clever means of substantially reducing suicide attempts from station platforms.

Join us as we travel to Osaka to speak with the university researcher who first explored the relationship between blue lights and suicide reduction in Japan.