Another billion or so will join by 2030, bringing the world’s population to 8.5 billion, according to UN estimates. The fastest-growing segment of the population is people over 60, a group that is expected to grow by 500 million people, to 1.4 billion, in 2030.
人口挑战十分紧迫。在过去12年中，十亿人加入了人类大军。据联合国估计，2030年将再新增十亿人，让全球人口达到85亿人。其中增长最快人群为60以上人群，预计到2030年，这一人群人数将增加5亿，达到14亿人。