耶鲁公开课。全球人口增长问题。

Open. Yale. Global. Problems. of. Population. Growth.

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问题在于，面对全球每年1.2%的人口增长，农民需要种植多少粮食才能满足人类的需求？

The question is, how much do they need to grow to keep abreast of the growth in the world’s population of about 1.2% a year?

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人口的增长虽然只是食品需求增长的部分原因，但是人口增长所带来的全球变暖、长期气候变化等问题仍然给农业带来了巨大的威胁。

While population growth accounts for only a modest part of the growing demand for food, it can contribute to global warming, and long-term climate change can threaten agriculture.

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