According to a report from the Worldwatch Institute, in the next ten years crop yield is expected to grow at the rate of 0.9 % each year. But world population will increase at the rate of 2 % per year (100 million people every year!
據世界觀測組織（Worldwatch Institute）報告，未來數十年，糧食產量可望每年增加○．九％（不是九％），可是世界人口卻將年年增加二％（相當於每年多一億人！）