For the first time ever, more than one in 10 people in Japan are now aged 80 or older. National data also shows 29.1% of the 125 million population is aged 65 or older- a record. Japan has one of the lowest birth-rates in the world and has long struggled with how to provide for its ageing population. It has the world's oldest population, measured by the proportion of people aged 65 or up, the United Nations says. (BBC News)