And looking at the UN's recent statistics and projections that the world will have 11 billion people on the planet before it plateaus in 2100, you're concerned about what that does to natural resources -- arable land, potable water, energy and minerals.
联合国最新的数据表明 世界人口增长在2100年会进入平稳 但那之前人口会到达110亿之多， 因此你们开始担心自然资源的问题-- 可耕种的土地，可饮用水源， 能源和矿产是否够用。