Opportunity Cost, definition of

The cost of an economic activity foregone by the choice of another activity.

• Global Warming, climategate, big business and being green
  The theory of man made global warming is turning into an excuse to derive profit from peoples good nature, what is going on?..
• Climategate, what is going on?
  Global warming, climate change, greenhouse effect and climategate; how 'valid' is the climate science?

• Solar Panels for your home, with the reduced feed-in tariff, are they a sound investment?
  We take a more detailed look at solar panels and help you work out if investing your money in solar is the right thing to do for you and the environment.
• Feed-in tariff for NSW reduced to 20c/kWh
  New South Wales has reviewed its feed-in tariff and reduced it to 20c/kWh, we look at what this means.
• energy efficient homes and energy saving
  Energy saving is something we all want to achieve at home through better efficiency. We look at the options available to you.
• US Thermal Solar Plant approved in California
  California approves the first U.S. Thermal Solar Plant.
• solar power efficiency
  What are the factors that are important in efficiently harvesting solar power - we look at what they are..
• Special Interest Groups
  To make it easier to find information on certain important topics we have made a set of SIG's (Special Interest Groups)...