Green Building is a philosophy that encourages the use and consumption of our resources in ways which have the smallest possible detrimental impact on the environment we live in.  The study of the interaction between man and his environment is called Ecology.  When it comes to building homes, we are confronted with an array of ecological decisions because of the scale of these projects and because so many natural resources are involved that can be toxic .  Our health as individuals and as large social groups is affected by everything around us, and ‘Building Green’ means conserving and considering the by-products of our consumption which have widespread impacts.  We need to be honest, far-sighted and clever.