Japan lowered the voting age to 18 from 20 on Wednesday, adding some 2.4 million people to the country's rapidly graying electorate, NBC News reported. On Tuesday, the Wall Street Journal reported that 26 percent of Japan's population was 65 or older, making it the world's fastest aging population. The aim is to encourage young people to help shape the nation's policies, particularly issues around the country's ballooning social security costs, according to the government. The law marks the first voting age change since 1945, when it was lowered 20 from 25.
