While bamboo has been used in construction in Asia for thousands of years, it's starting to catch on in sustainable housing development in parts of the United States and other places in the world.
Along a windy stretch of Texas highway, a woman walks with purpose. Mary Hesch is on a 1,439-mile pilgrimage from central Wisconsin to the Texas coast -- all of it on foot -- to honor her mother and raise awareness of the lung disease that took her life.