Constructing with sustainable materials is good for the planet. A sustainable material is one that does not deplete non-renewable resources. It will not have no adverse impact on the environment when used. We need to preserve natural resources in many ways. For instance, we can avoid using scarce non-renewable materials, such as peat and weathered limestone. Create less waste. Use reclaimed and rather than new materials. And use renewable materials such as crops. For environmental sustainability, we can reduce the impact on environmental by using materials with low embodied energy. Reduce transport of materials and associated fuel, emissions and road congestion, and prevention of waste going to landfill. This session discusses more about materials for energy and environmental sustainability.