Benefits existed in the Edo period, too. For example, 7.5 kilos of rice was given to each backstreet tenement house, and importance was placed on speed. Dr. ISO explains why they could have done so.

What did people do in pre-modern times before vaccines were developed? In Japan, notices were displayed. Dr. ISO shows unique examples such as "Jo-zake ari," meaning "We have high-quality sake."

Ten years after the Great East Japan Earthquake, NHK's song for recovery "Flowers Will Bloom" is reborn in 11 languages, thanks to artists from around the world. Following "Flowers Will Bloom Beyond Borders," aired in February, this program offers insight on the performers' memories of the disaster, their feelings about the song, as well as the unexpected positive impact it had on people in Syria.