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consider these houses unusual looking, although highly desirable from anenvironmental standpoint. In fact, if roof agriculture were adopted on a broad scalethe positive impact for the environment would be substantial.Some of the key reasons for selecting a green roof were to be found in the bookLiving Spaces which we purchased during the design phase:R Thicker roof structure leads to better sound and thermal insulation;R Improvement to the surrounding microclimate due to the much cooler roofsurface and the moisture given off by plants;R Increased thermal mass thereby stabilizing indoor temperature swings;R Absorption of dust and pollutants;R Retention of 50-70% of rain water and resulting r eduction in site run -off;R Plants provide habitat for small mammals and birds;R More esthetically pleasing;R Reportedly reduces cooling energy requirements by 30 -40%;Photo Voltaic Solar PanelsConventional systems linked to the electricity grid are environmentally damaging ina big way. Existing standard systems including coal , oil, gas, nuclear , and large scalehydro exact heavy penalties on the environment in cluding major carboncontributions to global warming from fossil fuels, loss of power in transmissionsover large distances, inability to safely dispose of nuclear power waste, dangers ofcatastrophe with nuclear accidents, and terrible environmental destruction of naturalhabitats caused by hydro. The future answer will be a combination of super -efficiency in appliances combined with solar, wind and geothermal generatedelectricity. The latest generation of these systems has proven to be efficient, longlasting and easy to implement in almost any area. Fuel cell technology, whichinvolves the storage of energy as hydrogen, may also provide greater flexibility forboth solar photo voltaic and wind power.Some of the advantages of photovoltaic solar power are listed below:R Uses silicon, a waste product from the electronics industry;262