The materials we build our homes with have an impact on our environment during their manufacture, use and disposal. Using natural materials that are plentiful and renewable such as rammed earth, stone and timber means a sustainable future for our children. Materials with low embodied energy (the energy consumed in manufacturing them), such as magnesium oxide weatherboards or mud bricks, means less CO2 emissions into our environment. Materials that are insulating and have high thermal mass and breathability such as straw bale and hempcrete mean less CO2 emissions during the building's use because they create a comfortable indoor climate without the need for artificial heating and cooling. Recycling materials or using materials with recycled content conserves our earths finite resources and reduces waste, and using materials that are non-toxic means a healthy home and no toxic pollution of our environment in their ultimate disposal. We will be adding content to the categories below and gradually expanding this section over the next few months.