Bob and his team go 'On Site' to discover how buildings are made to be environmentally friendly! By reusing straw bales, old rubber tires, tin cans and glass bottles, clever architects can design buildings that create the least possible harm to our environment. Bob also realizes that Nature has its own clever way of recycling when watch little birds making their nests out of unused scraps of straw, wool and dead leaves. Reduce, Reuse, Recycle - Yes We Can!