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| In this photo, an Indian boy suffers from dropsy after having consumed tainted mustard oil. Mass produced and widely distributed, the tainted oil led to 15 deaths and 500 hospitalizations throughout India in 1998. The world population has increased four-fold in the past century and may reach 10 billion by 2100. For its food needs, humanity increasingly depends upon industrial food production techniques, some of which may have unintended consequences. In Britain, for example, the feeding of sheep proteins to cows may have resulted in mad cow disease in cattle and Creuzfeldt-Jakob disease in humans. In Zimbabwe, recently, the government rejected much-needed food aid because it was genetically modified, its effects on human health and local agriculture unknown.
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