Much of the land in the developing world is used for cash crop agriculture, providing us with cheap coffee and tea, bananas and pineapples, beef and groundnuts. If these crops were produced in the UK we would not allow the workers to live in the conditions they do. The moral issue is more about the way we, the consumers, are being profligate with the world's resources than about the sustainable conditions under which these cash crop farmers live. We must not teach science in isolation from these issues.
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