Rapid growth in human populations accelerates the consumption of the earth's resources. According to statistics, in 1900 the world's total population of 1.6 billion consumed an average of a few thousand barrels of oil per day, but today's population of six billion consumes 72 million barrels per day.
人口的迅速增長使得地球資源加速地消耗，據統計，一九○○年，全世界十幾億人口，平均每天消耗幾千桶石油；而今六十億人口，平均每天消耗七千兩百萬桶石油。