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                       Airtight Houses Lower Energy Costs

   by George Putic

   One way to fight global warming is to lower the energy requirements of
   family houses, most of which waste electricity in many ways. "Passive
   houses" require much less energy, so they could easily get most of
   their power from renewable sources. VOA's George Putic reports.
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   [1]http://www.voanews.com/media/video/airtight-houses-lower-energy-cost
   s/3086652.html

References

   1. http://www.voanews.com/media/video/airtight-houses-lower-energy-costs/3086652.html