References
- Anon. No date. Energy. Tree of Knowledge. Marshall Cavendish, pp. 217–220.
- Anon. 2006. How hydropower plants work. http://people.howstuff works.com/hydropower-plant1.html (accessed 10 February 2006).
- Anon. 2006. Hydroelectricity. http://www.cc.utah.edu/-ptt25660/hydro.html (accessed 10 February 2006).
- Anon. 2006. Renewable energy. http://www.earthlife.org.za/topic.asp?TopiclD=3&Topic=Renewable%2OEnergy; http://www.eskom.co.za/live/index.php (accessed 10 February 2006).
- Anon. 2006. Solar power. http://www.cc.utah.edu/-ptt25660/solar.html (accessed 10 February 2006).
- Anon. 2006. Tidal power. http://www.cc.utah.edu/-ptt25660/tides.html (accessed 10 February 2006).
- Anon. 2006. Wind power. http://www.cc.utah.edu/-ptt25660/wind.html (accessed 10 February 2006).
- Burdett, S. 2005. Hey, sunshine! Fairlady, November 2005: 62–67.
- Darvill, A. 2006. “Fossil fuels”. http://home.clara.net/darvill/altenerg/fossil.html (accessed 11 February 2006).
- Darvill, A. 2006. Nuclear power. http://home.clara.net/darvill/altenerg/nuclear.html (accessed 11 February 2006).
- Darvill, A. 2006. Solar power. http://home.clara.netldarvill/altenerg/solar.html (accessed 11 February 2006).
- Darvill, A. 2006. Wind power. http://home.clara.net/darvill/altenerg/wind.html (accessed 11 February 2006).
- Darvill A. 2006. Tidal power. http://home.clara.net/darvill/altenerg/tidal.html (accessed 11 February 2006).
- Darvill, A. 2006. Hydro-electric. http://home.clara.net/darvill/altenerg/hydro.html (accessed 11 February 2006).
- Darvill, A. 2006. Wave power. http://home.clara.net/darvill/altenerg/wave.html (accessed 11 February 2006).
- Lovins, A. 2005. More profit with less carbon. Scientific American, September: 52–61.
- Macaulay, D. 2004. The Way Things Work. London, Dorling Kindersley, pp. 33–35.
- Roosevelt, M. 2002. The Winds of Change. Time, 2 September: 40–44.