What Does it mean to be Green?

Q & A

Green and sustainable housing in the 1970’s was probably a log cabin in the woods.
Today there are certified housing programs for Canadian Green Builders and purchasers.

What is a Green Home?
I thought Green Homes are buried in the ground, or were built with
straw bales or rammed Earth and have few windows?
What Green Building Programs should a purchaser look for?
This is confusing. Which Program is for me?
How is energy efficiency achieved?
Are Air Tight homes unhealthy?
What do Homeowners say about their Certified Green Homes?