the meeting was attended by experts in related fields, they included professor yamanaka of kyoto university who won a nobel prize for his studies in ips cells. ichiro explained the prefecture government's basic concept of the planned expo 2025. he said the expo would be held under the theme of health of humanity and the challenge of longevity. some said issues of poverty and famine should be included to win support from many countries including developing nations. expos combine entertainment and education with a wide variety of exhibitions, activities and shows. japan has hosted several of the events in the past. in 2005, an expo in the prefecture attracted more than 22 million people from around the world. the meeting confirmed a plan to compile a draft report by next march that is necessary before osaka can officially file its candidacy. >>> japan's retail giant eon is hoping a newly renovated outlet in central tokyo will mark the beginning of a turnaround for the store. it was the flagship store of a leading japanese supermarket chain. the first floor opened on friday. the renovated stor