Peter and Ashley Jensen build a sustainable straw bale panel house in the Hudson Valley -- the first of its kind in the States. With only three months to work, the race against nature is as they attempt to finish before the East Coast winter sets in.

A father-son duo builds an off-grid home in Montana's Flathead Valley. The 720-square-foot stick-frame home takes advantage of the mountain winds using a wind-turbine generator for power and features plenty of upcycled materials from the surrounding area.