耶鲁公开课。全球人口增长问题。
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?
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.
正如我们所说，许多因水引起的问题会引起全球性的问题，比如人口增长，气候变化，城市化，特别是改变的饮食。
As our explains, many water problems have global causes: population growth, climate change, urbanisation and, especially, changing diets.
同学们将会学习到例如全球变暖和人口增长等环境问题，以及面对这些问题的解决方案和保护政策。
Students will learn about environmental concerns such as global warming and population growth, as well as the methods for managing and protecting the environment.
全球财政的过度消费是由于过度的人口增长所导致的环境问题。
Over consumption by the world's fortunate is an environmental problem unmatched in severity by anything but perhaps population growth.
全球财政的过度消费是由于过度的人口增长所导致的环境问题。
Over consumption by the world's fortunate is an environmental problem unmatched in severity by anything but perhaps population growth.
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