The first time I remember hearing about green building was in the early-'70s, when a perfect blend of hippie culture and rising oil costs resulted in, among other things, houses called "earth ships" that incorporated wall systems made from old tires filled with dirt. But also, through some hits and mostly misses, that period also led to a greater understanding of energy efficiency, moisture control, and comfort, and many of today's lasting improvements can be directly tied to those early "experiments."
