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Thinking Allowed: The Ethnography Award winner 2015Monday, 27th April 2015 00:15 - BBC FourIn this episode of BBC Radio 4's Thinking Allowed, Laurie Taylor announces the Ethnography award winner 2015.... Read more: Thinking Allowed: The Ethnography Award winner 2015
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Secret History Of... Deptford High StAvailable until Friday, 22nd May 2015 03:00
Thinking Allowed: The Ethnography Award 'Shortlist' 2015Available until Friday, 15th April 2016 10:30
A History of Ideas - Descartes Cogito Ergo SumAvailable until Thursday, 14th April 2016 08:30
OU on the BBC: Andrew Marr's History of the World - SurvivalAndrew Marr sets off on an epic journey through 70,000 years of human history, starting with our... Read more: OU on the BBC: Andrew Marr's History of the World - Survival
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Water and human health
Water is a natural resource that is vital for human survival and health, although only...
Water is a natural resource that is vital for human survival and health, although only a tiny fraction of the Earth's supply is available to humans and terrestrial animals. In this unit we look at threats, such as pollution, to water's capacity to support life around the world.
By the end of this unit you should be able to:
- define and use in context, or recognise definitions and applications of, each of the terms printed in bold in the text;
- identify some of the reasons why clean, fresh water is an increasingly scarce resource for many people in the world;
- explain what is meant by the bioaccumulation of xenobiotic chemicals and identify the implications that this has for what people can safely eat;
- distinguish between the effects on human health of high and low levels of environmental pollution by nitrogen compounds;
- explain what is meant by an endocrine disruptor.
- Current section: Introduction
- Learning outcomes
- 1 Water as a global resource
- 2 The global water cycle
- 3 The distribution of water and its use by people
- 4 Chemical pollution of water
- 4.1 Levels of toxic substances
- 4.2 DDT: a classic case in ecotoxicology
- 4.3 Mercury
- 4.4 Nitrogen: a developing threat to health
- 4.5 Endocrine disruptors
- 4.6 Postscript to Section 4
- 5 Unit summary
- 6 Self-assessment questions
Water and human health
This unit examines why water shortages are predicted as a result of the world's growing population and the importance of access to clean and safe drinking water in public health. It looks at the distribution of water throughout the world and problems with contamination, topics of wide general interest.