Useful references:

• Verve Energy website at:
  www.verveenergy.com.au
• Research Institute for Sustainable Energy at:
  www.rise.org.au/info/Res/geothermal/index.html
• The Geothermal Education Office at:
  geothermal.marin.org/
• The Australian National University website, “Hot Rock Energy” at:
  hotrock.anu.edu.au/
• Geodynamics Limited website at:
  www.geodynamics.com.au
• The Australian Greenhouse Office website, “Hot Dry Rock” at:  
  www.greenhouse.gov.au - hot dryrock 1
  www.greenhouse.gov.au - hot dryrock 2
• International Energy Agency website at:
  www.iea.org/
• The Alliant Energy Kids website at:
  www.alliantenergykids.com
  and search for the word “geothermal”.
• “Wikipedia – the Free Encyclopedia” at:
  en.wikipedia.org/wiki/Pacific_Ring_of_Fire
  en.wikipedia.org/wiki/Indo-Australian_Plate
• The “Tiscali” website about the “Mid-Atlantic Ridge” at:
  www.tiscali.co.uk/reference/encyclopaedia
• “The US Department of Energy – Energy Efficiency and Renewable Energy” website about the “Geothermal Technologies Program” at:
  www.nrel.gov/docs/fy04osti/36316.pdf
• “The US Department of Energy – Energy Efficiency and Renewable Energy” website about “Geothermal Heat Pumps” at:
  www.eere.energy.gov/consumer/your_home
• The “IGA International Geothermal Association” website about “Installed Generating Capacity” at:
  iga.igg.cnr.it/geoworld/geoworld.php?sub=elgen