A 77-year-old man has renewed his friendship with an 81-year-old Swiss woman whom he met at the 1970 Osaka Expo thanks to Swiss staff at the same event this year, moving many people online. Tatsuhiko Yamamoto was 22 when he visited the first World Expo held in Osaka, Japan, in 1970, and met Marlies, a female member of staff at the Swiss Pavilion. He was taking a photograph of the then popular pavilion known as “Tree of Light” when Marlies approached him and invited him to take a picture...