Argument: According to United Nations' World Population Prospects 2004 Revision, the world's population will reach 9.1 billion by 2050, with India as the most populous nation, with a projected decline in fertility to slightly over 2 children per woman in 2050 (from 2.6 children in 2004). Even though the administrative system will be more efficient in the developing parts of the world by then, it will still be difficult to determine the exact number of people in the world.

Questions: What affects on the world will the increase of the world’s population with almost 50% until 2050 have, which of course will be unprecedented in human history in number of people? Are there necessary steps that have to be taken to make sure that we for instance produce enough food for such a huge population?

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