...a home that doesn't just use "green" design but is itself a living ecosystem...
The basic framework of the house would be created using a gardening method known as pleaching, in which young trees are woven together into a shape such as an archway, lattice, or screen and then encouraged to maintain that form over the years.
As the framework matured -- which might take a few years in tropical climates and several decades in more temperate locations -- the home grower would weave a dense layer of protective vines onto the exterior walls. Any gaps could be filled in with soil and growing plants to create miniature gardens. On the interior walls, a mixture of clay and straw beneath a final layer of smooth clay would provide insulation and block moisture. On south-facing walls, windows made of soy-based plastics would absorb warmth in the winter; ground-floor windows on the shady side could draw in cool breezes during hot months. Water collected on the roof would flow through the house for use by people and plants; waste water would be purified in an outdoor pond with bacteria, fish, and plants that consume organic waste.

This is where I want to plant my roots. Love to MIT. (via)